$

node_modules/@webassemblyjs/ast/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2018 Sven Sauleau <sven@sauleau.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

node_modules/@webassemblyjs/ast/README.md

@@ -0,0 +1,167 @@
+# @webassemblyjs/ast
+
+> AST utils for webassemblyjs
+
+## Installation
+
+```sh
+yarn add @webassemblyjs/ast
+```
+
+## Usage
+
+### Traverse
+
+```js
+import { traverse } from "@webassemblyjs/ast";
+
+traverse(ast, {
+  Module(path) {
+    console.log(path.node);
+  }
+});
+```
+
+### Instruction signatures
+
+```js
+import { signatures } from "@webassemblyjs/ast";
+
+console.log(signatures);
+```
+
+### Path methods
+
+- `findParent: NodeLocator`
+- `replaceWith: Node => void`
+- `remove: () => void`
+- `insertBefore: Node => void`
+- `insertAfter: Node => void`
+- `stop: () => void`
+
+### AST utils
+
+- function `module(id, fields, metadata)`
+- function `moduleMetadata(sections, functionNames, localNames)`
+- function `moduleNameMetadata(value)`
+- function `functionNameMetadata(value, index)`
+- function `localNameMetadata(value, localIndex, functionIndex)`
+- function `binaryModule(id, blob)`
+- function `quoteModule(id, string)`
+- function `sectionMetadata(section, startOffset, size, vectorOfSize)`
+- function `loopInstruction(label, resulttype, instr)`
+- function `instruction(id, args, namedArgs)`
+- function `objectInstruction(id, object, args, namedArgs)`
+- function `ifInstruction(testLabel, test, result, consequent, alternate)`
+- function `stringLiteral(value)`
+- function `numberLiteralFromRaw(value, raw)`
+- function `longNumberLiteral(value, raw)`
+- function `floatLiteral(value, nan, inf, raw)`
+- function `elem(table, offset, funcs)`
+- function `indexInFuncSection(index)`
+- function `valtypeLiteral(name)`
+- function `typeInstruction(id, functype)`
+- function `start(index)`
+- function `globalType(valtype, mutability)`
+- function `leadingComment(value)`
+- function `blockComment(value)`
+- function `data(memoryIndex, offset, init)`
+- function `global(globalType, init, name)`
+- function `table(elementType, limits, name, elements)`
+- function `memory(limits, id)`
+- function `funcImportDescr(id, signature)`
+- function `moduleImport(module, name, descr)`
+- function `moduleExportDescr(exportType, id)`
+- function `moduleExport(name, descr)`
+- function `limit(min, max)`
+- function `signature(params, results)`
+- function `program(body)`
+- function `identifier(value, raw)`
+- function `blockInstruction(label, instr, result)`
+- function `callInstruction(index, instrArgs)`
+- function `callIndirectInstruction(signature, intrs)`
+- function `byteArray(values)`
+- function `func(name, signature, body, isExternal, metadata)`
+- Constant`isModule`
+- Constant`isModuleMetadata`
+- Constant`isModuleNameMetadata`
+- Constant`isFunctionNameMetadata`
+- Constant`isLocalNameMetadata`
+- Constant`isBinaryModule`
+- Constant`isQuoteModule`
+- Constant`isSectionMetadata`
+- Constant`isLoopInstruction`
+- Constant`isInstruction`
+- Constant`isObjectInstruction`
+- Constant`isIfInstruction`
+- Constant`isStringLiteral`
+- Constant`isNumberLiteral`
+- Constant`isLongNumberLiteral`
+- Constant`isFloatLiteral`
+- Constant`isElem`
+- Constant`isIndexInFuncSection`
+- Constant`isValtypeLiteral`
+- Constant`isTypeInstruction`
+- Constant`isStart`
+- Constant`isGlobalType`
+- Constant`isLeadingComment`
+- Constant`isBlockComment`
+- Constant`isData`
+- Constant`isGlobal`
+- Constant`isTable`
+- Constant`isMemory`
+- Constant`isFuncImportDescr`
+- Constant`isModuleImport`
+- Constant`isModuleExportDescr`
+- Constant`isModuleExport`
+- Constant`isLimit`
+- Constant`isSignature`
+- Constant`isProgram`
+- Constant`isIdentifier`
+- Constant`isBlockInstruction`
+- Constant`isCallInstruction`
+- Constant`isCallIndirectInstruction`
+- Constant`isByteArray`
+- Constant`isFunc`
+- Constant`assertModule`
+- Constant`assertModuleMetadata`
+- Constant`assertModuleNameMetadata`
+- Constant`assertFunctionNameMetadata`
+- Constant`assertLocalNameMetadata`
+- Constant`assertBinaryModule`
+- Constant`assertQuoteModule`
+- Constant`assertSectionMetadata`
+- Constant`assertLoopInstruction`
+- Constant`assertInstruction`
+- Constant`assertObjectInstruction`
+- Constant`assertIfInstruction`
+- Constant`assertStringLiteral`
+- Constant`assertNumberLiteral`
+- Constant`assertLongNumberLiteral`
+- Constant`assertFloatLiteral`
+- Constant`assertElem`
+- Constant`assertIndexInFuncSection`
+- Constant`assertValtypeLiteral`
+- Constant`assertTypeInstruction`
+- Constant`assertStart`
+- Constant`assertGlobalType`
+- Constant`assertLeadingComment`
+- Constant`assertBlockComment`
+- Constant`assertData`
+- Constant`assertGlobal`
+- Constant`assertTable`
+- Constant`assertMemory`
+- Constant`assertFuncImportDescr`
+- Constant`assertModuleImport`
+- Constant`assertModuleExportDescr`
+- Constant`assertModuleExport`
+- Constant`assertLimit`
+- Constant`assertSignature`
+- Constant`assertProgram`
+- Constant`assertIdentifier`
+- Constant`assertBlockInstruction`
+- Constant`assertCallInstruction`
+- Constant`assertCallIndirectInstruction`
+- Constant`assertByteArray`
+- Constant`assertFunc`
+

node_modules/@webassemblyjs/ast/esm/clone.js

@@ -0,0 +1,3 @@
+export function cloneNode(n) {
+  return Object.assign({}, n);
+}

node_modules/@webassemblyjs/ast/esm/index.js

@@ -0,0 +1,7 @@
+export * from "./nodes";
+export { numberLiteralFromRaw, withLoc, withRaw, funcParam, indexLiteral, memIndexLiteral, instruction, objectInstruction } from "./node-helpers.js";
+export { traverse } from "./traverse";
+export { signatures } from "./signatures";
+export * from "./utils";
+export { cloneNode } from "./clone";
+export { moduleContextFromModuleAST } from "./transform/ast-module-to-module-context";

node_modules/@webassemblyjs/ast/esm/node-helpers.js

@@ -0,0 +1,84 @@
+import { parse32F, parse64F, parse32I, parse64I, parseU32, isNanLiteral, isInfLiteral } from "@webassemblyjs/helper-numbers";
+import { longNumberLiteral, floatLiteral, numberLiteral, instr } from "./nodes";
+export function numberLiteralFromRaw(rawValue) {
+  var instructionType = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : "i32";
+  var original = rawValue; // Remove numeric separators _
+
+  if (typeof rawValue === "string") {
+    rawValue = rawValue.replace(/_/g, "");
+  }
+
+  if (typeof rawValue === "number") {
+    return numberLiteral(rawValue, String(original));
+  } else {
+    switch (instructionType) {
+      case "i32":
+        {
+          return numberLiteral(parse32I(rawValue), String(original));
+        }
+
+      case "u32":
+        {
+          return numberLiteral(parseU32(rawValue), String(original));
+        }
+
+      case "i64":
+        {
+          return longNumberLiteral(parse64I(rawValue), String(original));
+        }
+
+      case "f32":
+        {
+          return floatLiteral(parse32F(rawValue), isNanLiteral(rawValue), isInfLiteral(rawValue), String(original));
+        }
+      // f64
+
+      default:
+        {
+          return floatLiteral(parse64F(rawValue), isNanLiteral(rawValue), isInfLiteral(rawValue), String(original));
+        }
+    }
+  }
+}
+export function instruction(id) {
+  var args = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
+  var namedArgs = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
+  return instr(id, undefined, args, namedArgs);
+}
+export function objectInstruction(id, object) {
+  var args = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : [];
+  var namedArgs = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};
+  return instr(id, object, args, namedArgs);
+}
+/**
+ * Decorators
+ */
+
+export function withLoc(n, end, start) {
+  var loc = {
+    start: start,
+    end: end
+  };
+  n.loc = loc;
+  return n;
+}
+export function withRaw(n, raw) {
+  n.raw = raw;
+  return n;
+}
+export function funcParam(valtype, id) {
+  return {
+    id: id,
+    valtype: valtype
+  };
+}
+export function indexLiteral(value) {
+  // $FlowIgnore
+  var x = numberLiteralFromRaw(value, "u32");
+  return x;
+}
+export function memIndexLiteral(value) {
+  // $FlowIgnore
+  var x = numberLiteralFromRaw(value, "u32");
+  return x;
+}

node_modules/@webassemblyjs/ast/esm/node-path.js

@@ -0,0 +1,137 @@
+function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }
+
+function findParent(_ref, cb) {
+  var parentPath = _ref.parentPath;
+
+  if (parentPath == null) {
+    throw new Error("node is root");
+  }
+
+  var currentPath = parentPath;
+
+  while (cb(currentPath) !== false) {
+    // Hit the root node, stop
+    // $FlowIgnore
+    if (currentPath.parentPath == null) {
+      return null;
+    } // $FlowIgnore
+
+
+    currentPath = currentPath.parentPath;
+  }
+
+  return currentPath.node;
+}
+
+function insertBefore(context, newNode) {
+  return insert(context, newNode);
+}
+
+function insertAfter(context, newNode) {
+  return insert(context, newNode, 1);
+}
+
+function insert(_ref2, newNode) {
+  var node = _ref2.node,
+      inList = _ref2.inList,
+      parentPath = _ref2.parentPath,
+      parentKey = _ref2.parentKey;
+  var indexOffset = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;
+
+  if (!inList) {
+    throw new Error('inList' + " error: " + ("insert can only be used for nodes that are within lists" || "unknown"));
+  }
+
+  if (!(parentPath != null)) {
+    throw new Error('parentPath != null' + " error: " + ("Can not remove root node" || "unknown"));
+  }
+
+  // $FlowIgnore
+  var parentList = parentPath.node[parentKey];
+  var indexInList = parentList.findIndex(function (n) {
+    return n === node;
+  });
+  parentList.splice(indexInList + indexOffset, 0, newNode);
+}
+
+function remove(_ref3) {
+  var node = _ref3.node,
+      parentKey = _ref3.parentKey,
+      parentPath = _ref3.parentPath;
+
+  if (!(parentPath != null)) {
+    throw new Error('parentPath != null' + " error: " + ("Can not remove root node" || "unknown"));
+  }
+
+  // $FlowIgnore
+  var parentNode = parentPath.node; // $FlowIgnore
+
+  var parentProperty = parentNode[parentKey];
+
+  if (Array.isArray(parentProperty)) {
+    // $FlowIgnore
+    parentNode[parentKey] = parentProperty.filter(function (n) {
+      return n !== node;
+    });
+  } else {
+    // $FlowIgnore
+    delete parentNode[parentKey];
+  }
+
+  node._deleted = true;
+}
+
+function stop(context) {
+  context.shouldStop = true;
+}
+
+function replaceWith(context, newNode) {
+  // $FlowIgnore
+  var parentNode = context.parentPath.node; // $FlowIgnore
+
+  var parentProperty = parentNode[context.parentKey];
+
+  if (Array.isArray(parentProperty)) {
+    var indexInList = parentProperty.findIndex(function (n) {
+      return n === context.node;
+    });
+    parentProperty.splice(indexInList, 1, newNode);
+  } else {
+    // $FlowIgnore
+    parentNode[context.parentKey] = newNode;
+  }
+
+  context.node._deleted = true;
+  context.node = newNode;
+} // bind the context to the first argument of node operations
+
+
+function bindNodeOperations(operations, context) {
+  var keys = Object.keys(operations);
+  var boundOperations = {};
+  keys.forEach(function (key) {
+    boundOperations[key] = operations[key].bind(null, context);
+  });
+  return boundOperations;
+}
+
+function createPathOperations(context) {
+  // $FlowIgnore
+  return bindNodeOperations({
+    findParent: findParent,
+    replaceWith: replaceWith,
+    remove: remove,
+    insertBefore: insertBefore,
+    insertAfter: insertAfter,
+    stop: stop
+  }, context);
+}
+
+export function createPath(context) {
+  var path = _extends({}, context); // $FlowIgnore
+
+
+  Object.assign(path, createPathOperations(path)); // $FlowIgnore
+
+  return path;
+}

node_modules/@webassemblyjs/ast/esm/signatures.js

@@ -0,0 +1,199 @@
+function sign(input, output) {
+  return [input, output];
+}
+
+var u32 = "u32";
+var i32 = "i32";
+var i64 = "i64";
+var f32 = "f32";
+var f64 = "f64";
+
+var vector = function vector(t) {
+  var vecType = [t]; // $FlowIgnore
+
+  vecType.vector = true;
+  return vecType;
+};
+
+var controlInstructions = {
+  unreachable: sign([], []),
+  nop: sign([], []),
+  // block ?
+  // loop ?
+  // if ?
+  // if else ?
+  br: sign([u32], []),
+  br_if: sign([u32], []),
+  br_table: sign(vector(u32), []),
+  return: sign([], []),
+  call: sign([u32], []),
+  call_indirect: sign([u32], [])
+};
+var parametricInstructions = {
+  drop: sign([], []),
+  select: sign([], [])
+};
+var variableInstructions = {
+  get_local: sign([u32], []),
+  set_local: sign([u32], []),
+  tee_local: sign([u32], []),
+  get_global: sign([u32], []),
+  set_global: sign([u32], [])
+};
+var memoryInstructions = {
+  "i32.load": sign([u32, u32], [i32]),
+  "i64.load": sign([u32, u32], []),
+  "f32.load": sign([u32, u32], []),
+  "f64.load": sign([u32, u32], []),
+  "i32.load8_s": sign([u32, u32], [i32]),
+  "i32.load8_u": sign([u32, u32], [i32]),
+  "i32.load16_s": sign([u32, u32], [i32]),
+  "i32.load16_u": sign([u32, u32], [i32]),
+  "i64.load8_s": sign([u32, u32], [i64]),
+  "i64.load8_u": sign([u32, u32], [i64]),
+  "i64.load16_s": sign([u32, u32], [i64]),
+  "i64.load16_u": sign([u32, u32], [i64]),
+  "i64.load32_s": sign([u32, u32], [i64]),
+  "i64.load32_u": sign([u32, u32], [i64]),
+  "i32.store": sign([u32, u32], []),
+  "i64.store": sign([u32, u32], []),
+  "f32.store": sign([u32, u32], []),
+  "f64.store": sign([u32, u32], []),
+  "i32.store8": sign([u32, u32], []),
+  "i32.store16": sign([u32, u32], []),
+  "i64.store8": sign([u32, u32], []),
+  "i64.store16": sign([u32, u32], []),
+  "i64.store32": sign([u32, u32], []),
+  current_memory: sign([], []),
+  grow_memory: sign([], [])
+};
+var numericInstructions = {
+  "i32.const": sign([i32], [i32]),
+  "i64.const": sign([i64], [i64]),
+  "f32.const": sign([f32], [f32]),
+  "f64.const": sign([f64], [f64]),
+  "i32.eqz": sign([i32], [i32]),
+  "i32.eq": sign([i32, i32], [i32]),
+  "i32.ne": sign([i32, i32], [i32]),
+  "i32.lt_s": sign([i32, i32], [i32]),
+  "i32.lt_u": sign([i32, i32], [i32]),
+  "i32.gt_s": sign([i32, i32], [i32]),
+  "i32.gt_u": sign([i32, i32], [i32]),
+  "i32.le_s": sign([i32, i32], [i32]),
+  "i32.le_u": sign([i32, i32], [i32]),
+  "i32.ge_s": sign([i32, i32], [i32]),
+  "i32.ge_u": sign([i32, i32], [i32]),
+  "i64.eqz": sign([i64], [i64]),
+  "i64.eq": sign([i64, i64], [i32]),
+  "i64.ne": sign([i64, i64], [i32]),
+  "i64.lt_s": sign([i64, i64], [i32]),
+  "i64.lt_u": sign([i64, i64], [i32]),
+  "i64.gt_s": sign([i64, i64], [i32]),
+  "i64.gt_u": sign([i64, i64], [i32]),
+  "i64.le_s": sign([i64, i64], [i32]),
+  "i64.le_u": sign([i64, i64], [i32]),
+  "i64.ge_s": sign([i64, i64], [i32]),
+  "i64.ge_u": sign([i64, i64], [i32]),
+  "f32.eq": sign([f32, f32], [i32]),
+  "f32.ne": sign([f32, f32], [i32]),
+  "f32.lt": sign([f32, f32], [i32]),
+  "f32.gt": sign([f32, f32], [i32]),
+  "f32.le": sign([f32, f32], [i32]),
+  "f32.ge": sign([f32, f32], [i32]),
+  "f64.eq": sign([f64, f64], [i32]),
+  "f64.ne": sign([f64, f64], [i32]),
+  "f64.lt": sign([f64, f64], [i32]),
+  "f64.gt": sign([f64, f64], [i32]),
+  "f64.le": sign([f64, f64], [i32]),
+  "f64.ge": sign([f64, f64], [i32]),
+  "i32.clz": sign([i32], [i32]),
+  "i32.ctz": sign([i32], [i32]),
+  "i32.popcnt": sign([i32], [i32]),
+  "i32.add": sign([i32, i32], [i32]),
+  "i32.sub": sign([i32, i32], [i32]),
+  "i32.mul": sign([i32, i32], [i32]),
+  "i32.div_s": sign([i32, i32], [i32]),
+  "i32.div_u": sign([i32, i32], [i32]),
+  "i32.rem_s": sign([i32, i32], [i32]),
+  "i32.rem_u": sign([i32, i32], [i32]),
+  "i32.and": sign([i32, i32], [i32]),
+  "i32.or": sign([i32, i32], [i32]),
+  "i32.xor": sign([i32, i32], [i32]),
+  "i32.shl": sign([i32, i32], [i32]),
+  "i32.shr_s": sign([i32, i32], [i32]),
+  "i32.shr_u": sign([i32, i32], [i32]),
+  "i32.rotl": sign([i32, i32], [i32]),
+  "i32.rotr": sign([i32, i32], [i32]),
+  "i64.clz": sign([i64], [i64]),
+  "i64.ctz": sign([i64], [i64]),
+  "i64.popcnt": sign([i64], [i64]),
+  "i64.add": sign([i64, i64], [i64]),
+  "i64.sub": sign([i64, i64], [i64]),
+  "i64.mul": sign([i64, i64], [i64]),
+  "i64.div_s": sign([i64, i64], [i64]),
+  "i64.div_u": sign([i64, i64], [i64]),
+  "i64.rem_s": sign([i64, i64], [i64]),
+  "i64.rem_u": sign([i64, i64], [i64]),
+  "i64.and": sign([i64, i64], [i64]),
+  "i64.or": sign([i64, i64], [i64]),
+  "i64.xor": sign([i64, i64], [i64]),
+  "i64.shl": sign([i64, i64], [i64]),
+  "i64.shr_s": sign([i64, i64], [i64]),
+  "i64.shr_u": sign([i64, i64], [i64]),
+  "i64.rotl": sign([i64, i64], [i64]),
+  "i64.rotr": sign([i64, i64], [i64]),
+  "f32.abs": sign([f32], [f32]),
+  "f32.neg": sign([f32], [f32]),
+  "f32.ceil": sign([f32], [f32]),
+  "f32.floor": sign([f32], [f32]),
+  "f32.trunc": sign([f32], [f32]),
+  "f32.nearest": sign([f32], [f32]),
+  "f32.sqrt": sign([f32], [f32]),
+  "f32.add": sign([f32, f32], [f32]),
+  "f32.sub": sign([f32, f32], [f32]),
+  "f32.mul": sign([f32, f32], [f32]),
+  "f32.div": sign([f32, f32], [f32]),
+  "f32.min": sign([f32, f32], [f32]),
+  "f32.max": sign([f32, f32], [f32]),
+  "f32.copysign": sign([f32, f32], [f32]),
+  "f64.abs": sign([f64], [f64]),
+  "f64.neg": sign([f64], [f64]),
+  "f64.ceil": sign([f64], [f64]),
+  "f64.floor": sign([f64], [f64]),
+  "f64.trunc": sign([f64], [f64]),
+  "f64.nearest": sign([f64], [f64]),
+  "f64.sqrt": sign([f64], [f64]),
+  "f64.add": sign([f64, f64], [f64]),
+  "f64.sub": sign([f64, f64], [f64]),
+  "f64.mul": sign([f64, f64], [f64]),
+  "f64.div": sign([f64, f64], [f64]),
+  "f64.min": sign([f64, f64], [f64]),
+  "f64.max": sign([f64, f64], [f64]),
+  "f64.copysign": sign([f64, f64], [f64]),
+  "i32.wrap/i64": sign([i64], [i32]),
+  "i32.trunc_s/f32": sign([f32], [i32]),
+  "i32.trunc_u/f32": sign([f32], [i32]),
+  "i32.trunc_s/f64": sign([f32], [i32]),
+  "i32.trunc_u/f64": sign([f64], [i32]),
+  "i64.extend_s/i32": sign([i32], [i64]),
+  "i64.extend_u/i32": sign([i32], [i64]),
+  "i64.trunc_s/f32": sign([f32], [i64]),
+  "i64.trunc_u/f32": sign([f32], [i64]),
+  "i64.trunc_s/f64": sign([f64], [i64]),
+  "i64.trunc_u/f64": sign([f64], [i64]),
+  "f32.convert_s/i32": sign([i32], [f32]),
+  "f32.convert_u/i32": sign([i32], [f32]),
+  "f32.convert_s/i64": sign([i64], [f32]),
+  "f32.convert_u/i64": sign([i64], [f32]),
+  "f32.demote/f64": sign([f64], [f32]),
+  "f64.convert_s/i32": sign([i32], [f64]),
+  "f64.convert_u/i32": sign([i32], [f64]),
+  "f64.convert_s/i64": sign([i64], [f64]),
+  "f64.convert_u/i64": sign([i64], [f64]),
+  "f64.promote/f32": sign([f32], [f64]),
+  "i32.reinterpret/f32": sign([f32], [i32]),
+  "i64.reinterpret/f64": sign([f64], [i64]),
+  "f32.reinterpret/i32": sign([i32], [f32]),
+  "f64.reinterpret/i64": sign([i64], [f64])
+};
+export var signatures = Object.assign({}, controlInstructions, parametricInstructions, variableInstructions, memoryInstructions, numericInstructions);

node_modules/@webassemblyjs/ast/esm/transform/ast-module-to-module-context/index.js

@@ -0,0 +1,378 @@
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+// TODO(sven): add flow in here
+import { isSignature, isNumberLiteral } from "../../nodes.js";
+export function moduleContextFromModuleAST(m) {
+  var moduleContext = new ModuleContext();
+
+  if (!(m.type === "Module")) {
+    throw new Error('m.type === "Module"' + " error: " + (undefined || "unknown"));
+  }
+
+  m.fields.forEach(function (field) {
+    switch (field.type) {
+      case "Start":
+        {
+          moduleContext.setStart(field.index);
+          break;
+        }
+
+      case "TypeInstruction":
+        {
+          moduleContext.addType(field);
+          break;
+        }
+
+      case "Func":
+        {
+          moduleContext.addFunction(field);
+          break;
+        }
+
+      case "Global":
+        {
+          moduleContext.defineGlobal(field);
+          break;
+        }
+
+      case "ModuleImport":
+        {
+          switch (field.descr.type) {
+            case "GlobalType":
+              {
+                moduleContext.importGlobal(field.descr.valtype, field.descr.mutability);
+                break;
+              }
+
+            case "Memory":
+              {
+                moduleContext.addMemory(field.descr.limits.min, field.descr.limits.max);
+                break;
+              }
+
+            case "FuncImportDescr":
+              {
+                moduleContext.importFunction(field.descr);
+                break;
+              }
+
+            case "Table":
+              {
+                // FIXME(sven): not implemented yet
+                break;
+              }
+
+            default:
+              throw new Error("Unsupported ModuleImport of type " + JSON.stringify(field.descr.type));
+          }
+
+          break;
+        }
+
+      case "Memory":
+        {
+          moduleContext.addMemory(field.limits.min, field.limits.max);
+          break;
+        }
+    }
+  });
+  return moduleContext;
+}
+/**
+ * Module context for type checking
+ */
+
+export var ModuleContext =
+/*#__PURE__*/
+function () {
+  function ModuleContext() {
+    _classCallCheck(this, ModuleContext);
+
+    this.funcs = [];
+    this.funcsOffsetByIdentifier = [];
+    this.types = [];
+    this.globals = [];
+    this.globalsOffsetByIdentifier = [];
+    this.mems = []; // Current stack frame
+
+    this.locals = [];
+    this.labels = [];
+    this.return = [];
+    this.debugName = "unknown";
+    this.start = null;
+  }
+  /**
+   * Set start segment
+   */
+
+
+  _createClass(ModuleContext, [{
+    key: "setStart",
+    value: function setStart(index) {
+      this.start = index.value;
+    }
+    /**
+     * Get start function
+     */
+
+  }, {
+    key: "getStart",
+    value: function getStart() {
+      return this.start;
+    }
+    /**
+     * Reset the active stack frame
+     */
+
+  }, {
+    key: "newContext",
+    value: function newContext(debugName, expectedResult) {
+      this.locals = [];
+      this.labels = [expectedResult];
+      this.return = expectedResult;
+      this.debugName = debugName;
+    }
+    /**
+     * Functions
+     */
+
+  }, {
+    key: "addFunction",
+    value: function addFunction(func
+    /*: Func*/
+    ) {
+      // eslint-disable-next-line prefer-const
+      var _ref = func.signature || {},
+          _ref$params = _ref.params,
+          args = _ref$params === void 0 ? [] : _ref$params,
+          _ref$results = _ref.results,
+          result = _ref$results === void 0 ? [] : _ref$results;
+
+      args = args.map(function (arg) {
+        return arg.valtype;
+      });
+      this.funcs.push({
+        args: args,
+        result: result
+      });
+
+      if (typeof func.name !== "undefined") {
+        this.funcsOffsetByIdentifier[func.name.value] = this.funcs.length - 1;
+      }
+    }
+  }, {
+    key: "importFunction",
+    value: function importFunction(funcimport) {
+      if (isSignature(funcimport.signature)) {
+        // eslint-disable-next-line prefer-const
+        var _funcimport$signature = funcimport.signature,
+            args = _funcimport$signature.params,
+            result = _funcimport$signature.results;
+        args = args.map(function (arg) {
+          return arg.valtype;
+        });
+        this.funcs.push({
+          args: args,
+          result: result
+        });
+      } else {
+        if (!isNumberLiteral(funcimport.signature)) {
+          throw new Error('isNumberLiteral(funcimport.signature)' + " error: " + (undefined || "unknown"));
+        }
+
+        var typeId = funcimport.signature.value;
+
+        if (!this.hasType(typeId)) {
+          throw new Error('this.hasType(typeId)' + " error: " + (undefined || "unknown"));
+        }
+
+        var signature = this.getType(typeId);
+        this.funcs.push({
+          args: signature.params.map(function (arg) {
+            return arg.valtype;
+          }),
+          result: signature.results
+        });
+      }
+
+      if (typeof funcimport.id !== "undefined") {
+        // imports are first, we can assume their index in the array
+        this.funcsOffsetByIdentifier[funcimport.id.value] = this.funcs.length - 1;
+      }
+    }
+  }, {
+    key: "hasFunction",
+    value: function hasFunction(index) {
+      return typeof this.getFunction(index) !== "undefined";
+    }
+  }, {
+    key: "getFunction",
+    value: function getFunction(index) {
+      if (typeof index !== "number") {
+        throw new Error("getFunction only supported for number index");
+      }
+
+      return this.funcs[index];
+    }
+  }, {
+    key: "getFunctionOffsetByIdentifier",
+    value: function getFunctionOffsetByIdentifier(name) {
+      if (!(typeof name === "string")) {
+        throw new Error('typeof name === "string"' + " error: " + (undefined || "unknown"));
+      }
+
+      return this.funcsOffsetByIdentifier[name];
+    }
+    /**
+     * Labels
+     */
+
+  }, {
+    key: "addLabel",
+    value: function addLabel(result) {
+      this.labels.unshift(result);
+    }
+  }, {
+    key: "hasLabel",
+    value: function hasLabel(index) {
+      return this.labels.length > index && index >= 0;
+    }
+  }, {
+    key: "getLabel",
+    value: function getLabel(index) {
+      return this.labels[index];
+    }
+  }, {
+    key: "popLabel",
+    value: function popLabel() {
+      this.labels.shift();
+    }
+    /**
+     * Locals
+     */
+
+  }, {
+    key: "hasLocal",
+    value: function hasLocal(index) {
+      return typeof this.getLocal(index) !== "undefined";
+    }
+  }, {
+    key: "getLocal",
+    value: function getLocal(index) {
+      return this.locals[index];
+    }
+  }, {
+    key: "addLocal",
+    value: function addLocal(type) {
+      this.locals.push(type);
+    }
+    /**
+     * Types
+     */
+
+  }, {
+    key: "addType",
+    value: function addType(type) {
+      if (!(type.functype.type === "Signature")) {
+        throw new Error('type.functype.type === "Signature"' + " error: " + (undefined || "unknown"));
+      }
+
+      this.types.push(type.functype);
+    }
+  }, {
+    key: "hasType",
+    value: function hasType(index) {
+      return this.types[index] !== undefined;
+    }
+  }, {
+    key: "getType",
+    value: function getType(index) {
+      return this.types[index];
+    }
+    /**
+     * Globals
+     */
+
+  }, {
+    key: "hasGlobal",
+    value: function hasGlobal(index) {
+      return this.globals.length > index && index >= 0;
+    }
+  }, {
+    key: "getGlobal",
+    value: function getGlobal(index) {
+      return this.globals[index].type;
+    }
+  }, {
+    key: "getGlobalOffsetByIdentifier",
+    value: function getGlobalOffsetByIdentifier(name) {
+      if (!(typeof name === "string")) {
+        throw new Error('typeof name === "string"' + " error: " + (undefined || "unknown"));
+      }
+
+      return this.globalsOffsetByIdentifier[name];
+    }
+  }, {
+    key: "defineGlobal",
+    value: function defineGlobal(global
+    /*: Global*/
+    ) {
+      var type = global.globalType.valtype;
+      var mutability = global.globalType.mutability;
+      this.globals.push({
+        type: type,
+        mutability: mutability
+      });
+
+      if (typeof global.name !== "undefined") {
+        this.globalsOffsetByIdentifier[global.name.value] = this.globals.length - 1;
+      }
+    }
+  }, {
+    key: "importGlobal",
+    value: function importGlobal(type, mutability) {
+      this.globals.push({
+        type: type,
+        mutability: mutability
+      });
+    }
+  }, {
+    key: "isMutableGlobal",
+    value: function isMutableGlobal(index) {
+      return this.globals[index].mutability === "var";
+    }
+  }, {
+    key: "isImmutableGlobal",
+    value: function isImmutableGlobal(index) {
+      return this.globals[index].mutability === "const";
+    }
+    /**
+     * Memories
+     */
+
+  }, {
+    key: "hasMemory",
+    value: function hasMemory(index) {
+      return this.mems.length > index && index >= 0;
+    }
+  }, {
+    key: "addMemory",
+    value: function addMemory(min, max) {
+      this.mems.push({
+        min: min,
+        max: max
+      });
+    }
+  }, {
+    key: "getMemory",
+    value: function getMemory(index) {
+      return this.mems[index];
+    }
+  }]);
+
+  return ModuleContext;
+}();

node_modules/@webassemblyjs/ast/esm/transform/denormalize-type-references/index.js

@@ -0,0 +1,76 @@
+var t = require("../../index"); // func and call_indirect instructions can either define a signature inline, or
+// reference a signature, e.g.
+//
+// ;; inline signature
+// (func (result i64)
+//   (i64.const 2)
+// )
+// ;; signature reference
+// (type (func (result i64)))
+// (func (type 0)
+//   (i64.const 2))
+// )
+//
+// this AST transform denormalises the type references, making all signatures within the module
+// inline.
+
+
+export function transform(ast) {
+  var typeInstructions = [];
+  t.traverse(ast, {
+    TypeInstruction: function TypeInstruction(_ref) {
+      var node = _ref.node;
+      typeInstructions.push(node);
+    }
+  });
+
+  if (!typeInstructions.length) {
+    return;
+  }
+
+  function denormalizeSignature(signature) {
+    // signature referenced by identifier
+    if (signature.type === "Identifier") {
+      var identifier = signature;
+      var typeInstruction = typeInstructions.find(function (t) {
+        return t.id.type === identifier.type && t.id.value === identifier.value;
+      });
+
+      if (!typeInstruction) {
+        throw new Error("A type instruction reference was not found ".concat(JSON.stringify(signature)));
+      }
+
+      return typeInstruction.functype;
+    } // signature referenced by index
+
+
+    if (signature.type === "NumberLiteral") {
+      var signatureRef = signature;
+      var _typeInstruction = typeInstructions[signatureRef.value];
+      return _typeInstruction.functype;
+    }
+
+    return signature;
+  }
+
+  t.traverse(ast, {
+    Func: function (_Func) {
+      function Func(_x) {
+        return _Func.apply(this, arguments);
+      }
+
+      Func.toString = function () {
+        return _Func.toString();
+      };
+
+      return Func;
+    }(function (_ref2) {
+      var node = _ref2.node;
+      node.signature = denormalizeSignature(node.signature);
+    }),
+    CallIndirectInstruction: function CallIndirectInstruction(_ref3) {
+      var node = _ref3.node;
+      node.signature = denormalizeSignature(node.signature);
+    }
+  });
+}

node_modules/@webassemblyjs/ast/esm/transform/wast-identifier-to-index/index.js

@@ -0,0 +1,216 @@
+function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
+
+function _slicedToArray(arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return _sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }
+
+import { isBlock, isFunc, isIdentifier, numberLiteralFromRaw, traverse } from "../../index";
+import { moduleContextFromModuleAST } from "../ast-module-to-module-context"; // FIXME(sven): do the same with all block instructions, must be more generic here
+
+function newUnexpectedFunction(i) {
+  return new Error("unknown function at offset: " + i);
+}
+
+export function transform(ast) {
+  var module;
+  traverse(ast, {
+    Module: function (_Module) {
+      function Module(_x) {
+        return _Module.apply(this, arguments);
+      }
+
+      Module.toString = function () {
+        return _Module.toString();
+      };
+
+      return Module;
+    }(function (path) {
+      module = path.node;
+    })
+  });
+  var moduleContext = moduleContextFromModuleAST(module); // Transform the actual instruction in function bodies
+
+  traverse(ast, {
+    Func: function (_Func) {
+      function Func(_x2) {
+        return _Func.apply(this, arguments);
+      }
+
+      Func.toString = function () {
+        return _Func.toString();
+      };
+
+      return Func;
+    }(function (path) {
+      transformFuncPath(path, moduleContext);
+    }),
+    Start: function (_Start) {
+      function Start(_x3) {
+        return _Start.apply(this, arguments);
+      }
+
+      Start.toString = function () {
+        return _Start.toString();
+      };
+
+      return Start;
+    }(function (path) {
+      var index = path.node.index;
+
+      if (isIdentifier(index) === true) {
+        var offsetInModule = moduleContext.getFunctionOffsetByIdentifier(index.value);
+
+        if (typeof offsetInModule === "undefined") {
+          throw newUnexpectedFunction(index.value);
+        } // Replace the index Identifier
+        // $FlowIgnore: reference?
+
+
+        path.node.index = numberLiteralFromRaw(offsetInModule);
+      }
+    })
+  });
+}
+
+function transformFuncPath(funcPath, moduleContext) {
+  var funcNode = funcPath.node;
+  var signature = funcNode.signature;
+
+  if (signature.type !== "Signature") {
+    throw new Error("Function signatures must be denormalised before execution");
+  }
+
+  var params = signature.params; // Add func locals in the context
+
+  params.forEach(function (p) {
+    return moduleContext.addLocal(p.valtype);
+  });
+  traverse(funcNode, {
+    Instr: function (_Instr) {
+      function Instr(_x4) {
+        return _Instr.apply(this, arguments);
+      }
+
+      Instr.toString = function () {
+        return _Instr.toString();
+      };
+
+      return Instr;
+    }(function (instrPath) {
+      var instrNode = instrPath.node;
+      /**
+       * Local access
+       */
+
+      if (instrNode.id === "get_local" || instrNode.id === "set_local" || instrNode.id === "tee_local") {
+        var _instrNode$args = _slicedToArray(instrNode.args, 1),
+            firstArg = _instrNode$args[0];
+
+        if (firstArg.type === "Identifier") {
+          var offsetInParams = params.findIndex(function (_ref) {
+            var id = _ref.id;
+            return id === firstArg.value;
+          });
+
+          if (offsetInParams === -1) {
+            throw new Error("".concat(firstArg.value, " not found in ").concat(instrNode.id, ": not declared in func params"));
+          } // Replace the Identifer node by our new NumberLiteral node
+
+
+          instrNode.args[0] = numberLiteralFromRaw(offsetInParams);
+        }
+      }
+      /**
+       * Global access
+       */
+
+
+      if (instrNode.id === "get_global" || instrNode.id === "set_global") {
+        var _instrNode$args2 = _slicedToArray(instrNode.args, 1),
+            _firstArg = _instrNode$args2[0];
+
+        if (isIdentifier(_firstArg) === true) {
+          var globalOffset = moduleContext.getGlobalOffsetByIdentifier( // $FlowIgnore: reference?
+          _firstArg.value);
+
+          if (typeof globalOffset === "undefined") {
+            // $FlowIgnore: reference?
+            throw new Error("global ".concat(_firstArg.value, " not found in module"));
+          } // Replace the Identifer node by our new NumberLiteral node
+
+
+          instrNode.args[0] = numberLiteralFromRaw(globalOffset);
+        }
+      }
+      /**
+       * Labels lookup
+       */
+
+
+      if (instrNode.id === "br") {
+        var _instrNode$args3 = _slicedToArray(instrNode.args, 1),
+            _firstArg2 = _instrNode$args3[0];
+
+        if (isIdentifier(_firstArg2) === true) {
+          // if the labels is not found it is going to be replaced with -1
+          // which is invalid.
+          var relativeBlockCount = -1; // $FlowIgnore: reference?
+
+          instrPath.findParent(function (_ref2) {
+            var node = _ref2.node;
+
+            if (isBlock(node)) {
+              relativeBlockCount++; // $FlowIgnore: reference?
+
+              var name = node.label || node.name;
+
+              if (_typeof(name) === "object") {
+                // $FlowIgnore: isIdentifier ensures that
+                if (name.value === _firstArg2.value) {
+                  // Found it
+                  return false;
+                }
+              }
+            }
+
+            if (isFunc(node)) {
+              return false;
+            }
+          }); // Replace the Identifer node by our new NumberLiteral node
+
+          instrNode.args[0] = numberLiteralFromRaw(relativeBlockCount);
+        }
+      }
+    }),
+
+    /**
+     * Func lookup
+     */
+    CallInstruction: function (_CallInstruction) {
+      function CallInstruction(_x5) {
+        return _CallInstruction.apply(this, arguments);
+      }
+
+      CallInstruction.toString = function () {
+        return _CallInstruction.toString();
+      };
+
+      return CallInstruction;
+    }(function (_ref3) {
+      var node = _ref3.node;
+      var index = node.index;
+
+      if (isIdentifier(index) === true) {
+        var offsetInModule = moduleContext.getFunctionOffsetByIdentifier(index.value);
+
+        if (typeof offsetInModule === "undefined") {
+          throw newUnexpectedFunction(index.value);
+        } // Replace the index Identifier
+        // $FlowIgnore: reference?
+
+
+        node.index = numberLiteralFromRaw(offsetInModule);
+      }
+    })
+  });
+}

node_modules/@webassemblyjs/ast/esm/traverse.js

@@ -0,0 +1,96 @@
+import { createPath } from "./node-path";
+import { unionTypesMap, nodeAndUnionTypes } from "./nodes"; // recursively walks the AST starting at the given node. The callback is invoked for
+// and object that has a 'type' property.
+
+function walk(context, callback) {
+  var stop = false;
+
+  function innerWalk(context, callback) {
+    if (stop) {
+      return;
+    }
+
+    var node = context.node;
+
+    if (node === undefined) {
+      console.warn("traversing with an empty context");
+      return;
+    }
+
+    if (node._deleted === true) {
+      return;
+    }
+
+    var path = createPath(context);
+    callback(node.type, path);
+
+    if (path.shouldStop) {
+      stop = true;
+      return;
+    }
+
+    Object.keys(node).forEach(function (prop) {
+      var value = node[prop];
+
+      if (value === null || value === undefined) {
+        return;
+      }
+
+      var valueAsArray = Array.isArray(value) ? value : [value];
+      valueAsArray.forEach(function (childNode) {
+        if (typeof childNode.type === "string") {
+          var childContext = {
+            node: childNode,
+            parentKey: prop,
+            parentPath: path,
+            shouldStop: false,
+            inList: Array.isArray(value)
+          };
+          innerWalk(childContext, callback);
+        }
+      });
+    });
+  }
+
+  innerWalk(context, callback);
+}
+
+var noop = function noop() {};
+
+export function traverse(node, visitors) {
+  var before = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : noop;
+  var after = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : noop;
+  Object.keys(visitors).forEach(function (visitor) {
+    if (!nodeAndUnionTypes.includes(visitor)) {
+      throw new Error("Unexpected visitor ".concat(visitor));
+    }
+  });
+  var context = {
+    node: node,
+    inList: false,
+    shouldStop: false,
+    parentPath: null,
+    parentKey: null
+  };
+  walk(context, function (type, path) {
+    if (typeof visitors[type] === "function") {
+      before(type, path);
+      visitors[type](path);
+      after(type, path);
+    }
+
+    var unionTypes = unionTypesMap[type];
+
+    if (!unionTypes) {
+      throw new Error("Unexpected node type ".concat(type));
+    }
+
+    unionTypes.forEach(function (unionType) {
+      if (typeof visitors[unionType] === "function") {
+        before(unionType, path);
+        visitors[unionType](path);
+        after(unionType, path);
+      }
+    });
+  });
+}

node_modules/@webassemblyjs/ast/esm/utils.js

@@ -0,0 +1,265 @@
+function _sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
+
+function _slicedToArray(arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return _sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }
+
+function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+import { signatures } from "./signatures";
+import { traverse } from "./traverse";
+import constants from "@webassemblyjs/helper-wasm-bytecode";
+import { getSectionForNode } from "@webassemblyjs/helper-wasm-bytecode";
+export function isAnonymous(ident) {
+  return ident.raw === "";
+}
+export function getSectionMetadata(ast, name) {
+  var section;
+  traverse(ast, {
+    SectionMetadata: function (_SectionMetadata) {
+      function SectionMetadata(_x) {
+        return _SectionMetadata.apply(this, arguments);
+      }
+
+      SectionMetadata.toString = function () {
+        return _SectionMetadata.toString();
+      };
+
+      return SectionMetadata;
+    }(function (_ref) {
+      var node = _ref.node;
+
+      if (node.section === name) {
+        section = node;
+      }
+    })
+  });
+  return section;
+}
+export function getSectionMetadatas(ast, name) {
+  var sections = [];
+  traverse(ast, {
+    SectionMetadata: function (_SectionMetadata2) {
+      function SectionMetadata(_x2) {
+        return _SectionMetadata2.apply(this, arguments);
+      }
+
+      SectionMetadata.toString = function () {
+        return _SectionMetadata2.toString();
+      };
+
+      return SectionMetadata;
+    }(function (_ref2) {
+      var node = _ref2.node;
+
+      if (node.section === name) {
+        sections.push(node);
+      }
+    })
+  });
+  return sections;
+}
+export function sortSectionMetadata(m) {
+  if (m.metadata == null) {
+    console.warn("sortSectionMetadata: no metadata to sort");
+    return;
+  } // $FlowIgnore
+
+
+  m.metadata.sections.sort(function (a, b) {
+    var aId = constants.sections[a.section];
+    var bId = constants.sections[b.section];
+
+    if (typeof aId !== "number" || typeof bId !== "number") {
+      throw new Error("Section id not found");
+    }
+
+    return aId - bId;
+  });
+}
+export function orderedInsertNode(m, n) {
+  assertHasLoc(n);
+  var didInsert = false;
+
+  if (n.type === "ModuleExport") {
+    m.fields.push(n);
+    return;
+  }
+
+  m.fields = m.fields.reduce(function (acc, field) {
+    var fieldEndCol = Infinity;
+
+    if (field.loc != null) {
+      // $FlowIgnore
+      fieldEndCol = field.loc.end.column;
+    } // $FlowIgnore: assertHasLoc ensures that
+
+
+    if (didInsert === false && n.loc.start.column < fieldEndCol) {
+      didInsert = true;
+      acc.push(n);
+    }
+
+    acc.push(field);
+    return acc;
+  }, []); // Handles empty modules or n is the last element
+
+  if (didInsert === false) {
+    m.fields.push(n);
+  }
+}
+export function assertHasLoc(n) {
+  if (n.loc == null || n.loc.start == null || n.loc.end == null) {
+    throw new Error("Internal failure: node (".concat(JSON.stringify(n.type), ") has no location information"));
+  }
+}
+export function getEndOfSection(s) {
+  assertHasLoc(s.size);
+  return s.startOffset + s.size.value + ( // $FlowIgnore
+  s.size.loc.end.column - s.size.loc.start.column);
+}
+export function shiftLoc(node, delta) {
+  // $FlowIgnore
+  node.loc.start.column += delta; // $FlowIgnore
+
+  node.loc.end.column += delta;
+}
+export function shiftSection(ast, node, delta) {
+  if (node.type !== "SectionMetadata") {
+    throw new Error("Can not shift node " + JSON.stringify(node.type));
+  }
+
+  node.startOffset += delta;
+
+  if (_typeof(node.size.loc) === "object") {
+    shiftLoc(node.size, delta);
+  } // Custom sections doesn't have vectorOfSize
+
+
+  if (_typeof(node.vectorOfSize) === "object" && _typeof(node.vectorOfSize.loc) === "object") {
+    shiftLoc(node.vectorOfSize, delta);
+  }
+
+  var sectionName = node.section; // shift node locations within that section
+
+  traverse(ast, {
+    Node: function Node(_ref3) {
+      var node = _ref3.node;
+      var section = getSectionForNode(node);
+
+      if (section === sectionName && _typeof(node.loc) === "object") {
+        shiftLoc(node, delta);
+      }
+    }
+  });
+}
+export function signatureForOpcode(object, name) {
+  var opcodeName = name;
+
+  if (object !== undefined && object !== "") {
+    opcodeName = object + "." + name;
+  }
+
+  var sign = signatures[opcodeName];
+
+  if (sign == undefined) {
+    // TODO: Uncomment this when br_table and others has been done
+    //throw new Error("Invalid opcode: "+opcodeName);
+    return [object, object];
+  }
+
+  return sign[0];
+}
+export function getUniqueNameGenerator() {
+  var inc = {};
+  return function () {
+    var prefix = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : "temp";
+
+    if (!(prefix in inc)) {
+      inc[prefix] = 0;
+    } else {
+      inc[prefix] = inc[prefix] + 1;
+    }
+
+    return prefix + "_" + inc[prefix];
+  };
+}
+export function getStartByteOffset(n) {
+  // $FlowIgnore
+  if (typeof n.loc === "undefined" || typeof n.loc.start === "undefined") {
+    throw new Error( // $FlowIgnore
+    "Can not get byte offset without loc informations, node: " + String(n.id));
+  }
+
+  return n.loc.start.column;
+}
+export function getEndByteOffset(n) {
+  // $FlowIgnore
+  if (typeof n.loc === "undefined" || typeof n.loc.end === "undefined") {
+    throw new Error("Can not get byte offset without loc informations, node: " + n.type);
+  }
+
+  return n.loc.end.column;
+}
+export function getFunctionBeginingByteOffset(n) {
+  if (!(n.body.length > 0)) {
+    throw new Error('n.body.length > 0' + " error: " + (undefined || "unknown"));
+  }
+
+  var _n$body = _slicedToArray(n.body, 1),
+      firstInstruction = _n$body[0];
+
+  return getStartByteOffset(firstInstruction);
+}
+export function getEndBlockByteOffset(n) {
+  // $FlowIgnore
+  if (!(n.instr.length > 0 || n.body.length > 0)) {
+    throw new Error('n.instr.length > 0 || n.body.length > 0' + " error: " + (undefined || "unknown"));
+  }
+
+  var lastInstruction;
+
+  if (n.instr) {
+    // $FlowIgnore
+    lastInstruction = n.instr[n.instr.length - 1];
+  }
+
+  if (n.body) {
+    // $FlowIgnore
+    lastInstruction = n.body[n.body.length - 1];
+  }
+
+  if (!(_typeof(lastInstruction) === "object")) {
+    throw new Error('typeof lastInstruction === "object"' + " error: " + (undefined || "unknown"));
+  }
+
+  // $FlowIgnore
+  return getStartByteOffset(lastInstruction);
+}
+export function getStartBlockByteOffset(n) {
+  // $FlowIgnore
+  if (!(n.instr.length > 0 || n.body.length > 0)) {
+    throw new Error('n.instr.length > 0 || n.body.length > 0' + " error: " + (undefined || "unknown"));
+  }
+
+  var fistInstruction;
+
+  if (n.instr) {
+    // $FlowIgnore
+    var _n$instr = _slicedToArray(n.instr, 1);
+
+    fistInstruction = _n$instr[0];
+  }
+
+  if (n.body) {
+    // $FlowIgnore
+    var _n$body2 = _slicedToArray(n.body, 1);
+
+    fistInstruction = _n$body2[0];
+  }
+
+  if (!(_typeof(fistInstruction) === "object")) {
+    throw new Error('typeof fistInstruction === "object"' + " error: " + (undefined || "unknown"));
+  }
+
+  // $FlowIgnore
+  return getStartByteOffset(fistInstruction);
+}

node_modules/@webassemblyjs/ast/lib/clone.js

@@ -0,0 +1,10 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.cloneNode = cloneNode;
+
+function cloneNode(n) {
+  return Object.assign({}, n);
+}

node_modules/@webassemblyjs/ast/lib/index.js

@@ -0,0 +1,127 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+var _exportNames = {
+  numberLiteralFromRaw: true,
+  withLoc: true,
+  withRaw: true,
+  funcParam: true,
+  indexLiteral: true,
+  memIndexLiteral: true,
+  instruction: true,
+  objectInstruction: true,
+  traverse: true,
+  signatures: true,
+  cloneNode: true,
+  moduleContextFromModuleAST: true
+};
+Object.defineProperty(exports, "numberLiteralFromRaw", {
+  enumerable: true,
+  get: function get() {
+    return _nodeHelpers.numberLiteralFromRaw;
+  }
+});
+Object.defineProperty(exports, "withLoc", {
+  enumerable: true,
+  get: function get() {
+    return _nodeHelpers.withLoc;
+  }
+});
+Object.defineProperty(exports, "withRaw", {
+  enumerable: true,
+  get: function get() {
+    return _nodeHelpers.withRaw;
+  }
+});
+Object.defineProperty(exports, "funcParam", {
+  enumerable: true,
+  get: function get() {
+    return _nodeHelpers.funcParam;
+  }
+});
+Object.defineProperty(exports, "indexLiteral", {
+  enumerable: true,
+  get: function get() {
+    return _nodeHelpers.indexLiteral;
+  }
+});
+Object.defineProperty(exports, "memIndexLiteral", {
+  enumerable: true,
+  get: function get() {
+    return _nodeHelpers.memIndexLiteral;
+  }
+});
+Object.defineProperty(exports, "instruction", {
+  enumerable: true,
+  get: function get() {
+    return _nodeHelpers.instruction;
+  }
+});
+Object.defineProperty(exports, "objectInstruction", {
+  enumerable: true,
+  get: function get() {
+    return _nodeHelpers.objectInstruction;
+  }
+});
+Object.defineProperty(exports, "traverse", {
+  enumerable: true,
+  get: function get() {
+    return _traverse.traverse;
+  }
+});
+Object.defineProperty(exports, "signatures", {
+  enumerable: true,
+  get: function get() {
+    return _signatures.signatures;
+  }
+});
+Object.defineProperty(exports, "cloneNode", {
+  enumerable: true,
+  get: function get() {
+    return _clone.cloneNode;
+  }
+});
+Object.defineProperty(exports, "moduleContextFromModuleAST", {
+  enumerable: true,
+  get: function get() {
+    return _astModuleToModuleContext.moduleContextFromModuleAST;
+  }
+});
+
+var _nodes = require("./nodes");
+
+Object.keys(_nodes).forEach(function (key) {
+  if (key === "default" || key === "__esModule") return;
+  if (Object.prototype.hasOwnProperty.call(_exportNames, key)) return;
+  Object.defineProperty(exports, key, {
+    enumerable: true,
+    get: function get() {
+      return _nodes[key];
+    }
+  });
+});
+
+var _nodeHelpers = require("./node-helpers.js");
+
+var _traverse = require("./traverse");
+
+var _signatures = require("./signatures");
+
+var _utils = require("./utils");
+
+Object.keys(_utils).forEach(function (key) {
+  if (key === "default" || key === "__esModule") return;
+  if (Object.prototype.hasOwnProperty.call(_exportNames, key)) return;
+  Object.defineProperty(exports, key, {
+    enumerable: true,
+    get: function get() {
+      return _utils[key];
+    }
+  });
+});
+
+var _clone = require("./clone");
+
+var _astModuleToModuleContext = require("./transform/ast-module-to-module-context");

node_modules/@webassemblyjs/ast/lib/node-helpers.js

@@ -0,0 +1,107 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.numberLiteralFromRaw = numberLiteralFromRaw;
+exports.instruction = instruction;
+exports.objectInstruction = objectInstruction;
+exports.withLoc = withLoc;
+exports.withRaw = withRaw;
+exports.funcParam = funcParam;
+exports.indexLiteral = indexLiteral;
+exports.memIndexLiteral = memIndexLiteral;
+
+var _helperNumbers = require("@webassemblyjs/helper-numbers");
+
+var _nodes = require("./nodes");
+
+function numberLiteralFromRaw(rawValue) {
+  var instructionType = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : "i32";
+  var original = rawValue; // Remove numeric separators _
+
+  if (typeof rawValue === "string") {
+    rawValue = rawValue.replace(/_/g, "");
+  }
+
+  if (typeof rawValue === "number") {
+    return (0, _nodes.numberLiteral)(rawValue, String(original));
+  } else {
+    switch (instructionType) {
+      case "i32":
+        {
+          return (0, _nodes.numberLiteral)((0, _helperNumbers.parse32I)(rawValue), String(original));
+        }
+
+      case "u32":
+        {
+          return (0, _nodes.numberLiteral)((0, _helperNumbers.parseU32)(rawValue), String(original));
+        }
+
+      case "i64":
+        {
+          return (0, _nodes.longNumberLiteral)((0, _helperNumbers.parse64I)(rawValue), String(original));
+        }
+
+      case "f32":
+        {
+          return (0, _nodes.floatLiteral)((0, _helperNumbers.parse32F)(rawValue), (0, _helperNumbers.isNanLiteral)(rawValue), (0, _helperNumbers.isInfLiteral)(rawValue), String(original));
+        }
+      // f64
+
+      default:
+        {
+          return (0, _nodes.floatLiteral)((0, _helperNumbers.parse64F)(rawValue), (0, _helperNumbers.isNanLiteral)(rawValue), (0, _helperNumbers.isInfLiteral)(rawValue), String(original));
+        }
+    }
+  }
+}
+
+function instruction(id) {
+  var args = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
+  var namedArgs = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
+  return (0, _nodes.instr)(id, undefined, args, namedArgs);
+}
+
+function objectInstruction(id, object) {
+  var args = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : [];
+  var namedArgs = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};
+  return (0, _nodes.instr)(id, object, args, namedArgs);
+}
+/**
+ * Decorators
+ */
+
+
+function withLoc(n, end, start) {
+  var loc = {
+    start: start,
+    end: end
+  };
+  n.loc = loc;
+  return n;
+}
+
+function withRaw(n, raw) {
+  n.raw = raw;
+  return n;
+}
+
+function funcParam(valtype, id) {
+  return {
+    id: id,
+    valtype: valtype
+  };
+}
+
+function indexLiteral(value) {
+  // $FlowIgnore
+  var x = numberLiteralFromRaw(value, "u32");
+  return x;
+}
+
+function memIndexLiteral(value) {
+  // $FlowIgnore
+  var x = numberLiteralFromRaw(value, "u32");
+  return x;
+}

node_modules/@webassemblyjs/ast/lib/node-path.js

@@ -0,0 +1,144 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.createPath = createPath;
+
+function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }
+
+function findParent(_ref, cb) {
+  var parentPath = _ref.parentPath;
+
+  if (parentPath == null) {
+    throw new Error("node is root");
+  }
+
+  var currentPath = parentPath;
+
+  while (cb(currentPath) !== false) {
+    // Hit the root node, stop
+    // $FlowIgnore
+    if (currentPath.parentPath == null) {
+      return null;
+    } // $FlowIgnore
+
+
+    currentPath = currentPath.parentPath;
+  }
+
+  return currentPath.node;
+}
+
+function insertBefore(context, newNode) {
+  return insert(context, newNode);
+}
+
+function insertAfter(context, newNode) {
+  return insert(context, newNode, 1);
+}
+
+function insert(_ref2, newNode) {
+  var node = _ref2.node,
+      inList = _ref2.inList,
+      parentPath = _ref2.parentPath,
+      parentKey = _ref2.parentKey;
+  var indexOffset = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;
+
+  if (!inList) {
+    throw new Error('inList' + " error: " + ("insert can only be used for nodes that are within lists" || "unknown"));
+  }
+
+  if (!(parentPath != null)) {
+    throw new Error('parentPath != null' + " error: " + ("Can not remove root node" || "unknown"));
+  }
+
+  // $FlowIgnore
+  var parentList = parentPath.node[parentKey];
+  var indexInList = parentList.findIndex(function (n) {
+    return n === node;
+  });
+  parentList.splice(indexInList + indexOffset, 0, newNode);
+}
+
+function remove(_ref3) {
+  var node = _ref3.node,
+      parentKey = _ref3.parentKey,
+      parentPath = _ref3.parentPath;
+
+  if (!(parentPath != null)) {
+    throw new Error('parentPath != null' + " error: " + ("Can not remove root node" || "unknown"));
+  }
+
+  // $FlowIgnore
+  var parentNode = parentPath.node; // $FlowIgnore
+
+  var parentProperty = parentNode[parentKey];
+
+  if (Array.isArray(parentProperty)) {
+    // $FlowIgnore
+    parentNode[parentKey] = parentProperty.filter(function (n) {
+      return n !== node;
+    });
+  } else {
+    // $FlowIgnore
+    delete parentNode[parentKey];
+  }
+
+  node._deleted = true;
+}
+
+function stop(context) {
+  context.shouldStop = true;
+}
+
+function replaceWith(context, newNode) {
+  // $FlowIgnore
+  var parentNode = context.parentPath.node; // $FlowIgnore
+
+  var parentProperty = parentNode[context.parentKey];
+
+  if (Array.isArray(parentProperty)) {
+    var indexInList = parentProperty.findIndex(function (n) {
+      return n === context.node;
+    });
+    parentProperty.splice(indexInList, 1, newNode);
+  } else {
+    // $FlowIgnore
+    parentNode[context.parentKey] = newNode;
+  }
+
+  context.node._deleted = true;
+  context.node = newNode;
+} // bind the context to the first argument of node operations
+
+
+function bindNodeOperations(operations, context) {
+  var keys = Object.keys(operations);
+  var boundOperations = {};
+  keys.forEach(function (key) {
+    boundOperations[key] = operations[key].bind(null, context);
+  });
+  return boundOperations;
+}
+
+function createPathOperations(context) {
+  // $FlowIgnore
+  return bindNodeOperations({
+    findParent: findParent,
+    replaceWith: replaceWith,
+    remove: remove,
+    insertBefore: insertBefore,
+    insertAfter: insertAfter,
+    stop: stop
+  }, context);
+}
+
+function createPath(context) {
+  var path = _extends({}, context); // $FlowIgnore
+
+
+  Object.assign(path, createPathOperations(path)); // $FlowIgnore
+
+  return path;
+}

node_modules/@webassemblyjs/ast/lib/signatures.js

@@ -0,0 +1,207 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.signatures = void 0;
+
+function sign(input, output) {
+  return [input, output];
+}
+
+var u32 = "u32";
+var i32 = "i32";
+var i64 = "i64";
+var f32 = "f32";
+var f64 = "f64";
+
+var vector = function vector(t) {
+  var vecType = [t]; // $FlowIgnore
+
+  vecType.vector = true;
+  return vecType;
+};
+
+var controlInstructions = {
+  unreachable: sign([], []),
+  nop: sign([], []),
+  // block ?
+  // loop ?
+  // if ?
+  // if else ?
+  br: sign([u32], []),
+  br_if: sign([u32], []),
+  br_table: sign(vector(u32), []),
+  return: sign([], []),
+  call: sign([u32], []),
+  call_indirect: sign([u32], [])
+};
+var parametricInstructions = {
+  drop: sign([], []),
+  select: sign([], [])
+};
+var variableInstructions = {
+  get_local: sign([u32], []),
+  set_local: sign([u32], []),
+  tee_local: sign([u32], []),
+  get_global: sign([u32], []),
+  set_global: sign([u32], [])
+};
+var memoryInstructions = {
+  "i32.load": sign([u32, u32], [i32]),
+  "i64.load": sign([u32, u32], []),
+  "f32.load": sign([u32, u32], []),
+  "f64.load": sign([u32, u32], []),
+  "i32.load8_s": sign([u32, u32], [i32]),
+  "i32.load8_u": sign([u32, u32], [i32]),
+  "i32.load16_s": sign([u32, u32], [i32]),
+  "i32.load16_u": sign([u32, u32], [i32]),
+  "i64.load8_s": sign([u32, u32], [i64]),
+  "i64.load8_u": sign([u32, u32], [i64]),
+  "i64.load16_s": sign([u32, u32], [i64]),
+  "i64.load16_u": sign([u32, u32], [i64]),
+  "i64.load32_s": sign([u32, u32], [i64]),
+  "i64.load32_u": sign([u32, u32], [i64]),
+  "i32.store": sign([u32, u32], []),
+  "i64.store": sign([u32, u32], []),
+  "f32.store": sign([u32, u32], []),
+  "f64.store": sign([u32, u32], []),
+  "i32.store8": sign([u32, u32], []),
+  "i32.store16": sign([u32, u32], []),
+  "i64.store8": sign([u32, u32], []),
+  "i64.store16": sign([u32, u32], []),
+  "i64.store32": sign([u32, u32], []),
+  current_memory: sign([], []),
+  grow_memory: sign([], [])
+};
+var numericInstructions = {
+  "i32.const": sign([i32], [i32]),
+  "i64.const": sign([i64], [i64]),
+  "f32.const": sign([f32], [f32]),
+  "f64.const": sign([f64], [f64]),
+  "i32.eqz": sign([i32], [i32]),
+  "i32.eq": sign([i32, i32], [i32]),
+  "i32.ne": sign([i32, i32], [i32]),
+  "i32.lt_s": sign([i32, i32], [i32]),
+  "i32.lt_u": sign([i32, i32], [i32]),
+  "i32.gt_s": sign([i32, i32], [i32]),
+  "i32.gt_u": sign([i32, i32], [i32]),
+  "i32.le_s": sign([i32, i32], [i32]),
+  "i32.le_u": sign([i32, i32], [i32]),
+  "i32.ge_s": sign([i32, i32], [i32]),
+  "i32.ge_u": sign([i32, i32], [i32]),
+  "i64.eqz": sign([i64], [i64]),
+  "i64.eq": sign([i64, i64], [i32]),
+  "i64.ne": sign([i64, i64], [i32]),
+  "i64.lt_s": sign([i64, i64], [i32]),
+  "i64.lt_u": sign([i64, i64], [i32]),
+  "i64.gt_s": sign([i64, i64], [i32]),
+  "i64.gt_u": sign([i64, i64], [i32]),
+  "i64.le_s": sign([i64, i64], [i32]),
+  "i64.le_u": sign([i64, i64], [i32]),
+  "i64.ge_s": sign([i64, i64], [i32]),
+  "i64.ge_u": sign([i64, i64], [i32]),
+  "f32.eq": sign([f32, f32], [i32]),
+  "f32.ne": sign([f32, f32], [i32]),
+  "f32.lt": sign([f32, f32], [i32]),
+  "f32.gt": sign([f32, f32], [i32]),
+  "f32.le": sign([f32, f32], [i32]),
+  "f32.ge": sign([f32, f32], [i32]),
+  "f64.eq": sign([f64, f64], [i32]),
+  "f64.ne": sign([f64, f64], [i32]),
+  "f64.lt": sign([f64, f64], [i32]),
+  "f64.gt": sign([f64, f64], [i32]),
+  "f64.le": sign([f64, f64], [i32]),
+  "f64.ge": sign([f64, f64], [i32]),
+  "i32.clz": sign([i32], [i32]),
+  "i32.ctz": sign([i32], [i32]),
+  "i32.popcnt": sign([i32], [i32]),
+  "i32.add": sign([i32, i32], [i32]),
+  "i32.sub": sign([i32, i32], [i32]),
+  "i32.mul": sign([i32, i32], [i32]),
+  "i32.div_s": sign([i32, i32], [i32]),
+  "i32.div_u": sign([i32, i32], [i32]),
+  "i32.rem_s": sign([i32, i32], [i32]),
+  "i32.rem_u": sign([i32, i32], [i32]),
+  "i32.and": sign([i32, i32], [i32]),
+  "i32.or": sign([i32, i32], [i32]),
+  "i32.xor": sign([i32, i32], [i32]),
+  "i32.shl": sign([i32, i32], [i32]),
+  "i32.shr_s": sign([i32, i32], [i32]),
+  "i32.shr_u": sign([i32, i32], [i32]),
+  "i32.rotl": sign([i32, i32], [i32]),
+  "i32.rotr": sign([i32, i32], [i32]),
+  "i64.clz": sign([i64], [i64]),
+  "i64.ctz": sign([i64], [i64]),
+  "i64.popcnt": sign([i64], [i64]),
+  "i64.add": sign([i64, i64], [i64]),
+  "i64.sub": sign([i64, i64], [i64]),
+  "i64.mul": sign([i64, i64], [i64]),
+  "i64.div_s": sign([i64, i64], [i64]),
+  "i64.div_u": sign([i64, i64], [i64]),
+  "i64.rem_s": sign([i64, i64], [i64]),
+  "i64.rem_u": sign([i64, i64], [i64]),
+  "i64.and": sign([i64, i64], [i64]),
+  "i64.or": sign([i64, i64], [i64]),
+  "i64.xor": sign([i64, i64], [i64]),
+  "i64.shl": sign([i64, i64], [i64]),
+  "i64.shr_s": sign([i64, i64], [i64]),
+  "i64.shr_u": sign([i64, i64], [i64]),
+  "i64.rotl": sign([i64, i64], [i64]),
+  "i64.rotr": sign([i64, i64], [i64]),
+  "f32.abs": sign([f32], [f32]),
+  "f32.neg": sign([f32], [f32]),
+  "f32.ceil": sign([f32], [f32]),
+  "f32.floor": sign([f32], [f32]),
+  "f32.trunc": sign([f32], [f32]),
+  "f32.nearest": sign([f32], [f32]),
+  "f32.sqrt": sign([f32], [f32]),
+  "f32.add": sign([f32, f32], [f32]),
+  "f32.sub": sign([f32, f32], [f32]),
+  "f32.mul": sign([f32, f32], [f32]),
+  "f32.div": sign([f32, f32], [f32]),
+  "f32.min": sign([f32, f32], [f32]),
+  "f32.max": sign([f32, f32], [f32]),
+  "f32.copysign": sign([f32, f32], [f32]),
+  "f64.abs": sign([f64], [f64]),
+  "f64.neg": sign([f64], [f64]),
+  "f64.ceil": sign([f64], [f64]),
+  "f64.floor": sign([f64], [f64]),
+  "f64.trunc": sign([f64], [f64]),
+  "f64.nearest": sign([f64], [f64]),
+  "f64.sqrt": sign([f64], [f64]),
+  "f64.add": sign([f64, f64], [f64]),
+  "f64.sub": sign([f64, f64], [f64]),
+  "f64.mul": sign([f64, f64], [f64]),
+  "f64.div": sign([f64, f64], [f64]),
+  "f64.min": sign([f64, f64], [f64]),
+  "f64.max": sign([f64, f64], [f64]),
+  "f64.copysign": sign([f64, f64], [f64]),
+  "i32.wrap/i64": sign([i64], [i32]),
+  "i32.trunc_s/f32": sign([f32], [i32]),
+  "i32.trunc_u/f32": sign([f32], [i32]),
+  "i32.trunc_s/f64": sign([f32], [i32]),
+  "i32.trunc_u/f64": sign([f64], [i32]),
+  "i64.extend_s/i32": sign([i32], [i64]),
+  "i64.extend_u/i32": sign([i32], [i64]),
+  "i64.trunc_s/f32": sign([f32], [i64]),
+  "i64.trunc_u/f32": sign([f32], [i64]),
+  "i64.trunc_s/f64": sign([f64], [i64]),
+  "i64.trunc_u/f64": sign([f64], [i64]),
+  "f32.convert_s/i32": sign([i32], [f32]),
+  "f32.convert_u/i32": sign([i32], [f32]),
+  "f32.convert_s/i64": sign([i64], [f32]),
+  "f32.convert_u/i64": sign([i64], [f32]),
+  "f32.demote/f64": sign([f64], [f32]),
+  "f64.convert_s/i32": sign([i32], [f64]),
+  "f64.convert_u/i32": sign([i32], [f64]),
+  "f64.convert_s/i64": sign([i64], [f64]),
+  "f64.convert_u/i64": sign([i64], [f64]),
+  "f64.promote/f32": sign([f32], [f64]),
+  "i32.reinterpret/f32": sign([f32], [i32]),
+  "i64.reinterpret/f64": sign([f64], [i64]),
+  "f32.reinterpret/i32": sign([i32], [f32]),
+  "f64.reinterpret/i64": sign([i64], [f64])
+};
+var signatures = Object.assign({}, controlInstructions, parametricInstructions, variableInstructions, memoryInstructions, numericInstructions);
+exports.signatures = signatures;

node_modules/@webassemblyjs/ast/lib/transform/ast-module-to-module-context/index.js

@@ -0,0 +1,389 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.moduleContextFromModuleAST = moduleContextFromModuleAST;
+exports.ModuleContext = void 0;
+
+var _nodes = require("../../nodes.js");
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+function moduleContextFromModuleAST(m) {
+  var moduleContext = new ModuleContext();
+
+  if (!(m.type === "Module")) {
+    throw new Error('m.type === "Module"' + " error: " + (undefined || "unknown"));
+  }
+
+  m.fields.forEach(function (field) {
+    switch (field.type) {
+      case "Start":
+        {
+          moduleContext.setStart(field.index);
+          break;
+        }
+
+      case "TypeInstruction":
+        {
+          moduleContext.addType(field);
+          break;
+        }
+
+      case "Func":
+        {
+          moduleContext.addFunction(field);
+          break;
+        }
+
+      case "Global":
+        {
+          moduleContext.defineGlobal(field);
+          break;
+        }
+
+      case "ModuleImport":
+        {
+          switch (field.descr.type) {
+            case "GlobalType":
+              {
+                moduleContext.importGlobal(field.descr.valtype, field.descr.mutability);
+                break;
+              }
+
+            case "Memory":
+              {
+                moduleContext.addMemory(field.descr.limits.min, field.descr.limits.max);
+                break;
+              }
+
+            case "FuncImportDescr":
+              {
+                moduleContext.importFunction(field.descr);
+                break;
+              }
+
+            case "Table":
+              {
+                // FIXME(sven): not implemented yet
+                break;
+              }
+
+            default:
+              throw new Error("Unsupported ModuleImport of type " + JSON.stringify(field.descr.type));
+          }
+
+          break;
+        }
+
+      case "Memory":
+        {
+          moduleContext.addMemory(field.limits.min, field.limits.max);
+          break;
+        }
+    }
+  });
+  return moduleContext;
+}
+/**
+ * Module context for type checking
+ */
+
+
+var ModuleContext =
+/*#__PURE__*/
+function () {
+  function ModuleContext() {
+    _classCallCheck(this, ModuleContext);
+
+    this.funcs = [];
+    this.funcsOffsetByIdentifier = [];
+    this.types = [];
+    this.globals = [];
+    this.globalsOffsetByIdentifier = [];
+    this.mems = []; // Current stack frame
+
+    this.locals = [];
+    this.labels = [];
+    this.return = [];
+    this.debugName = "unknown";
+    this.start = null;
+  }
+  /**
+   * Set start segment
+   */
+
+
+  _createClass(ModuleContext, [{
+    key: "setStart",
+    value: function setStart(index) {
+      this.start = index.value;
+    }
+    /**
+     * Get start function
+     */
+
+  }, {
+    key: "getStart",
+    value: function getStart() {
+      return this.start;
+    }
+    /**
+     * Reset the active stack frame
+     */
+
+  }, {
+    key: "newContext",
+    value: function newContext(debugName, expectedResult) {
+      this.locals = [];
+      this.labels = [expectedResult];
+      this.return = expectedResult;
+      this.debugName = debugName;
+    }
+    /**
+     * Functions
+     */
+
+  }, {
+    key: "addFunction",
+    value: function addFunction(func
+    /*: Func*/
+    ) {
+      // eslint-disable-next-line prefer-const
+      var _ref = func.signature || {},
+          _ref$params = _ref.params,
+          args = _ref$params === void 0 ? [] : _ref$params,
+          _ref$results = _ref.results,
+          result = _ref$results === void 0 ? [] : _ref$results;
+
+      args = args.map(function (arg) {
+        return arg.valtype;
+      });
+      this.funcs.push({
+        args: args,
+        result: result
+      });
+
+      if (typeof func.name !== "undefined") {
+        this.funcsOffsetByIdentifier[func.name.value] = this.funcs.length - 1;
+      }
+    }
+  }, {
+    key: "importFunction",
+    value: function importFunction(funcimport) {
+      if ((0, _nodes.isSignature)(funcimport.signature)) {
+        // eslint-disable-next-line prefer-const
+        var _funcimport$signature = funcimport.signature,
+            args = _funcimport$signature.params,
+            result = _funcimport$signature.results;
+        args = args.map(function (arg) {
+          return arg.valtype;
+        });
+        this.funcs.push({
+          args: args,
+          result: result
+        });
+      } else {
+        if (!(0, _nodes.isNumberLiteral)(funcimport.signature)) {
+          throw new Error('isNumberLiteral(funcimport.signature)' + " error: " + (undefined || "unknown"));
+        }
+
+        var typeId = funcimport.signature.value;
+
+        if (!this.hasType(typeId)) {
+          throw new Error('this.hasType(typeId)' + " error: " + (undefined || "unknown"));
+        }
+
+        var signature = this.getType(typeId);
+        this.funcs.push({
+          args: signature.params.map(function (arg) {
+            return arg.valtype;
+          }),
+          result: signature.results
+        });
+      }
+
+      if (typeof funcimport.id !== "undefined") {
+        // imports are first, we can assume their index in the array
+        this.funcsOffsetByIdentifier[funcimport.id.value] = this.funcs.length - 1;
+      }
+    }
+  }, {
+    key: "hasFunction",
+    value: function hasFunction(index) {
+      return typeof this.getFunction(index) !== "undefined";
+    }
+  }, {
+    key: "getFunction",
+    value: function getFunction(index) {
+      if (typeof index !== "number") {
+        throw new Error("getFunction only supported for number index");
+      }
+
+      return this.funcs[index];
+    }
+  }, {
+    key: "getFunctionOffsetByIdentifier",
+    value: function getFunctionOffsetByIdentifier(name) {
+      if (!(typeof name === "string")) {
+        throw new Error('typeof name === "string"' + " error: " + (undefined || "unknown"));
+      }
+
+      return this.funcsOffsetByIdentifier[name];
+    }
+    /**
+     * Labels
+     */
+
+  }, {
+    key: "addLabel",
+    value: function addLabel(result) {
+      this.labels.unshift(result);
+    }
+  }, {
+    key: "hasLabel",
+    value: function hasLabel(index) {
+      return this.labels.length > index && index >= 0;
+    }
+  }, {
+    key: "getLabel",
+    value: function getLabel(index) {
+      return this.labels[index];
+    }
+  }, {
+    key: "popLabel",
+    value: function popLabel() {
+      this.labels.shift();
+    }
+    /**
+     * Locals
+     */
+
+  }, {
+    key: "hasLocal",
+    value: function hasLocal(index) {
+      return typeof this.getLocal(index) !== "undefined";
+    }
+  }, {
+    key: "getLocal",
+    value: function getLocal(index) {
+      return this.locals[index];
+    }
+  }, {
+    key: "addLocal",
+    value: function addLocal(type) {
+      this.locals.push(type);
+    }
+    /**
+     * Types
+     */
+
+  }, {
+    key: "addType",
+    value: function addType(type) {
+      if (!(type.functype.type === "Signature")) {
+        throw new Error('type.functype.type === "Signature"' + " error: " + (undefined || "unknown"));
+      }
+
+      this.types.push(type.functype);
+    }
+  }, {
+    key: "hasType",
+    value: function hasType(index) {
+      return this.types[index] !== undefined;
+    }
+  }, {
+    key: "getType",
+    value: function getType(index) {
+      return this.types[index];
+    }
+    /**
+     * Globals
+     */
+
+  }, {
+    key: "hasGlobal",
+    value: function hasGlobal(index) {
+      return this.globals.length > index && index >= 0;
+    }
+  }, {
+    key: "getGlobal",
+    value: function getGlobal(index) {
+      return this.globals[index].type;
+    }
+  }, {
+    key: "getGlobalOffsetByIdentifier",
+    value: function getGlobalOffsetByIdentifier(name) {
+      if (!(typeof name === "string")) {
+        throw new Error('typeof name === "string"' + " error: " + (undefined || "unknown"));
+      }
+
+      return this.globalsOffsetByIdentifier[name];
+    }
+  }, {
+    key: "defineGlobal",
+    value: function defineGlobal(global
+    /*: Global*/
+    ) {
+      var type = global.globalType.valtype;
+      var mutability = global.globalType.mutability;
+      this.globals.push({
+        type: type,
+        mutability: mutability
+      });
+
+      if (typeof global.name !== "undefined") {
+        this.globalsOffsetByIdentifier[global.name.value] = this.globals.length - 1;
+      }
+    }
+  }, {
+    key: "importGlobal",
+    value: function importGlobal(type, mutability) {
+      this.globals.push({
+        type: type,
+        mutability: mutability
+      });
+    }
+  }, {
+    key: "isMutableGlobal",
+    value: function isMutableGlobal(index) {
+      return this.globals[index].mutability === "var";
+    }
+  }, {
+    key: "isImmutableGlobal",
+    value: function isImmutableGlobal(index) {
+      return this.globals[index].mutability === "const";
+    }
+    /**
+     * Memories
+     */
+
+  }, {
+    key: "hasMemory",
+    value: function hasMemory(index) {
+      return this.mems.length > index && index >= 0;
+    }
+  }, {
+    key: "addMemory",
+    value: function addMemory(min, max) {
+      this.mems.push({
+        min: min,
+        max: max
+      });
+    }
+  }, {
+    key: "getMemory",
+    value: function getMemory(index) {
+      return this.mems[index];
+    }
+  }]);
+
+  return ModuleContext;
+}();
+
+exports.ModuleContext = ModuleContext;

node_modules/@webassemblyjs/ast/lib/transform/denormalize-type-references/index.js

@@ -0,0 +1,83 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.transform = transform;
+
+var t = require("../../index"); // func and call_indirect instructions can either define a signature inline, or
+// reference a signature, e.g.
+//
+// ;; inline signature
+// (func (result i64)
+//   (i64.const 2)
+// )
+// ;; signature reference
+// (type (func (result i64)))
+// (func (type 0)
+//   (i64.const 2))
+// )
+//
+// this AST transform denormalises the type references, making all signatures within the module
+// inline.
+
+
+function transform(ast) {
+  var typeInstructions = [];
+  t.traverse(ast, {
+    TypeInstruction: function TypeInstruction(_ref) {
+      var node = _ref.node;
+      typeInstructions.push(node);
+    }
+  });
+
+  if (!typeInstructions.length) {
+    return;
+  }
+
+  function denormalizeSignature(signature) {
+    // signature referenced by identifier
+    if (signature.type === "Identifier") {
+      var identifier = signature;
+      var typeInstruction = typeInstructions.find(function (t) {
+        return t.id.type === identifier.type && t.id.value === identifier.value;
+      });
+
+      if (!typeInstruction) {
+        throw new Error("A type instruction reference was not found ".concat(JSON.stringify(signature)));
+      }
+
+      return typeInstruction.functype;
+    } // signature referenced by index
+
+
+    if (signature.type === "NumberLiteral") {
+      var signatureRef = signature;
+      var _typeInstruction = typeInstructions[signatureRef.value];
+      return _typeInstruction.functype;
+    }
+
+    return signature;
+  }
+
+  t.traverse(ast, {
+    Func: function (_Func) {
+      function Func(_x) {
+        return _Func.apply(this, arguments);
+      }
+
+      Func.toString = function () {
+        return _Func.toString();
+      };
+
+      return Func;
+    }(function (_ref2) {
+      var node = _ref2.node;
+      node.signature = denormalizeSignature(node.signature);
+    }),
+    CallIndirectInstruction: function CallIndirectInstruction(_ref3) {
+      var node = _ref3.node;
+      node.signature = denormalizeSignature(node.signature);
+    }
+  });
+}

node_modules/@webassemblyjs/ast/lib/transform/wast-identifier-to-index/index.js

@@ -0,0 +1,225 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.transform = transform;
+
+var _index = require("../../index");
+
+var _astModuleToModuleContext = require("../ast-module-to-module-context");
+
+function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
+
+function _slicedToArray(arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return _sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }
+
+// FIXME(sven): do the same with all block instructions, must be more generic here
+function newUnexpectedFunction(i) {
+  return new Error("unknown function at offset: " + i);
+}
+
+function transform(ast) {
+  var module;
+  (0, _index.traverse)(ast, {
+    Module: function (_Module) {
+      function Module(_x) {
+        return _Module.apply(this, arguments);
+      }
+
+      Module.toString = function () {
+        return _Module.toString();
+      };
+
+      return Module;
+    }(function (path) {
+      module = path.node;
+    })
+  });
+  var moduleContext = (0, _astModuleToModuleContext.moduleContextFromModuleAST)(module); // Transform the actual instruction in function bodies
+
+  (0, _index.traverse)(ast, {
+    Func: function (_Func) {
+      function Func(_x2) {
+        return _Func.apply(this, arguments);
+      }
+
+      Func.toString = function () {
+        return _Func.toString();
+      };
+
+      return Func;
+    }(function (path) {
+      transformFuncPath(path, moduleContext);
+    }),
+    Start: function (_Start) {
+      function Start(_x3) {
+        return _Start.apply(this, arguments);
+      }
+
+      Start.toString = function () {
+        return _Start.toString();
+      };
+
+      return Start;
+    }(function (path) {
+      var index = path.node.index;
+
+      if ((0, _index.isIdentifier)(index) === true) {
+        var offsetInModule = moduleContext.getFunctionOffsetByIdentifier(index.value);
+
+        if (typeof offsetInModule === "undefined") {
+          throw newUnexpectedFunction(index.value);
+        } // Replace the index Identifier
+        // $FlowIgnore: reference?
+
+
+        path.node.index = (0, _index.numberLiteralFromRaw)(offsetInModule);
+      }
+    })
+  });
+}
+
+function transformFuncPath(funcPath, moduleContext) {
+  var funcNode = funcPath.node;
+  var signature = funcNode.signature;
+
+  if (signature.type !== "Signature") {
+    throw new Error("Function signatures must be denormalised before execution");
+  }
+
+  var params = signature.params; // Add func locals in the context
+
+  params.forEach(function (p) {
+    return moduleContext.addLocal(p.valtype);
+  });
+  (0, _index.traverse)(funcNode, {
+    Instr: function (_Instr) {
+      function Instr(_x4) {
+        return _Instr.apply(this, arguments);
+      }
+
+      Instr.toString = function () {
+        return _Instr.toString();
+      };
+
+      return Instr;
+    }(function (instrPath) {
+      var instrNode = instrPath.node;
+      /**
+       * Local access
+       */
+
+      if (instrNode.id === "get_local" || instrNode.id === "set_local" || instrNode.id === "tee_local") {
+        var _instrNode$args = _slicedToArray(instrNode.args, 1),
+            firstArg = _instrNode$args[0];
+
+        if (firstArg.type === "Identifier") {
+          var offsetInParams = params.findIndex(function (_ref) {
+            var id = _ref.id;
+            return id === firstArg.value;
+          });
+
+          if (offsetInParams === -1) {
+            throw new Error("".concat(firstArg.value, " not found in ").concat(instrNode.id, ": not declared in func params"));
+          } // Replace the Identifer node by our new NumberLiteral node
+
+
+          instrNode.args[0] = (0, _index.numberLiteralFromRaw)(offsetInParams);
+        }
+      }
+      /**
+       * Global access
+       */
+
+
+      if (instrNode.id === "get_global" || instrNode.id === "set_global") {
+        var _instrNode$args2 = _slicedToArray(instrNode.args, 1),
+            _firstArg = _instrNode$args2[0];
+
+        if ((0, _index.isIdentifier)(_firstArg) === true) {
+          var globalOffset = moduleContext.getGlobalOffsetByIdentifier( // $FlowIgnore: reference?
+          _firstArg.value);
+
+          if (typeof globalOffset === "undefined") {
+            // $FlowIgnore: reference?
+            throw new Error("global ".concat(_firstArg.value, " not found in module"));
+          } // Replace the Identifer node by our new NumberLiteral node
+
+
+          instrNode.args[0] = (0, _index.numberLiteralFromRaw)(globalOffset);
+        }
+      }
+      /**
+       * Labels lookup
+       */
+
+
+      if (instrNode.id === "br") {
+        var _instrNode$args3 = _slicedToArray(instrNode.args, 1),
+            _firstArg2 = _instrNode$args3[0];
+
+        if ((0, _index.isIdentifier)(_firstArg2) === true) {
+          // if the labels is not found it is going to be replaced with -1
+          // which is invalid.
+          var relativeBlockCount = -1; // $FlowIgnore: reference?
+
+          instrPath.findParent(function (_ref2) {
+            var node = _ref2.node;
+
+            if ((0, _index.isBlock)(node)) {
+              relativeBlockCount++; // $FlowIgnore: reference?
+
+              var name = node.label || node.name;
+
+              if (_typeof(name) === "object") {
+                // $FlowIgnore: isIdentifier ensures that
+                if (name.value === _firstArg2.value) {
+                  // Found it
+                  return false;
+                }
+              }
+            }
+
+            if ((0, _index.isFunc)(node)) {
+              return false;
+            }
+          }); // Replace the Identifer node by our new NumberLiteral node
+
+          instrNode.args[0] = (0, _index.numberLiteralFromRaw)(relativeBlockCount);
+        }
+      }
+    }),
+
+    /**
+     * Func lookup
+     */
+    CallInstruction: function (_CallInstruction) {
+      function CallInstruction(_x5) {
+        return _CallInstruction.apply(this, arguments);
+      }
+
+      CallInstruction.toString = function () {
+        return _CallInstruction.toString();
+      };
+
+      return CallInstruction;
+    }(function (_ref3) {
+      var node = _ref3.node;
+      var index = node.index;
+
+      if ((0, _index.isIdentifier)(index) === true) {
+        var offsetInModule = moduleContext.getFunctionOffsetByIdentifier(index.value);
+
+        if (typeof offsetInModule === "undefined") {
+          throw newUnexpectedFunction(index.value);
+        } // Replace the index Identifier
+        // $FlowIgnore: reference?
+
+
+        node.index = (0, _index.numberLiteralFromRaw)(offsetInModule);
+      }
+    })
+  });
+}

node_modules/@webassemblyjs/ast/lib/traverse.js

@@ -0,0 +1,105 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.traverse = traverse;
+
+var _nodePath = require("./node-path");
+
+var _nodes = require("./nodes");
+
+// recursively walks the AST starting at the given node. The callback is invoked for
+// and object that has a 'type' property.
+function walk(context, callback) {
+  var stop = false;
+
+  function innerWalk(context, callback) {
+    if (stop) {
+      return;
+    }
+
+    var node = context.node;
+
+    if (node === undefined) {
+      console.warn("traversing with an empty context");
+      return;
+    }
+
+    if (node._deleted === true) {
+      return;
+    }
+
+    var path = (0, _nodePath.createPath)(context);
+    callback(node.type, path);
+
+    if (path.shouldStop) {
+      stop = true;
+      return;
+    }
+
+    Object.keys(node).forEach(function (prop) {
+      var value = node[prop];
+
+      if (value === null || value === undefined) {
+        return;
+      }
+
+      var valueAsArray = Array.isArray(value) ? value : [value];
+      valueAsArray.forEach(function (childNode) {
+        if (typeof childNode.type === "string") {
+          var childContext = {
+            node: childNode,
+            parentKey: prop,
+            parentPath: path,
+            shouldStop: false,
+            inList: Array.isArray(value)
+          };
+          innerWalk(childContext, callback);
+        }
+      });
+    });
+  }
+
+  innerWalk(context, callback);
+}
+
+var noop = function noop() {};
+
+function traverse(node, visitors) {
+  var before = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : noop;
+  var after = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : noop;
+  Object.keys(visitors).forEach(function (visitor) {
+    if (!_nodes.nodeAndUnionTypes.includes(visitor)) {
+      throw new Error("Unexpected visitor ".concat(visitor));
+    }
+  });
+  var context = {
+    node: node,
+    inList: false,
+    shouldStop: false,
+    parentPath: null,
+    parentKey: null
+  };
+  walk(context, function (type, path) {
+    if (typeof visitors[type] === "function") {
+      before(type, path);
+      visitors[type](path);
+      after(type, path);
+    }
+
+    var unionTypes = _nodes.unionTypesMap[type];
+
+    if (!unionTypes) {
+      throw new Error("Unexpected node type ".concat(type));
+    }
+
+    unionTypes.forEach(function (unionType) {
+      if (typeof visitors[unionType] === "function") {
+        before(unionType, path);
+        visitors[unionType](path);
+        after(unionType, path);
+      }
+    });
+  });
+}

node_modules/@webassemblyjs/ast/lib/utils.js

@@ -0,0 +1,306 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.isAnonymous = isAnonymous;
+exports.getSectionMetadata = getSectionMetadata;
+exports.getSectionMetadatas = getSectionMetadatas;
+exports.sortSectionMetadata = sortSectionMetadata;
+exports.orderedInsertNode = orderedInsertNode;
+exports.assertHasLoc = assertHasLoc;
+exports.getEndOfSection = getEndOfSection;
+exports.shiftLoc = shiftLoc;
+exports.shiftSection = shiftSection;
+exports.signatureForOpcode = signatureForOpcode;
+exports.getUniqueNameGenerator = getUniqueNameGenerator;
+exports.getStartByteOffset = getStartByteOffset;
+exports.getEndByteOffset = getEndByteOffset;
+exports.getFunctionBeginingByteOffset = getFunctionBeginingByteOffset;
+exports.getEndBlockByteOffset = getEndBlockByteOffset;
+exports.getStartBlockByteOffset = getStartBlockByteOffset;
+
+var _signatures = require("./signatures");
+
+var _traverse = require("./traverse");
+
+var _helperWasmBytecode = _interopRequireWildcard(require("@webassemblyjs/helper-wasm-bytecode"));
+
+function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } }
+
+function _sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
+
+function _slicedToArray(arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return _sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }
+
+function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function isAnonymous(ident) {
+  return ident.raw === "";
+}
+
+function getSectionMetadata(ast, name) {
+  var section;
+  (0, _traverse.traverse)(ast, {
+    SectionMetadata: function (_SectionMetadata) {
+      function SectionMetadata(_x) {
+        return _SectionMetadata.apply(this, arguments);
+      }
+
+      SectionMetadata.toString = function () {
+        return _SectionMetadata.toString();
+      };
+
+      return SectionMetadata;
+    }(function (_ref) {
+      var node = _ref.node;
+
+      if (node.section === name) {
+        section = node;
+      }
+    })
+  });
+  return section;
+}
+
+function getSectionMetadatas(ast, name) {
+  var sections = [];
+  (0, _traverse.traverse)(ast, {
+    SectionMetadata: function (_SectionMetadata2) {
+      function SectionMetadata(_x2) {
+        return _SectionMetadata2.apply(this, arguments);
+      }
+
+      SectionMetadata.toString = function () {
+        return _SectionMetadata2.toString();
+      };
+
+      return SectionMetadata;
+    }(function (_ref2) {
+      var node = _ref2.node;
+
+      if (node.section === name) {
+        sections.push(node);
+      }
+    })
+  });
+  return sections;
+}
+
+function sortSectionMetadata(m) {
+  if (m.metadata == null) {
+    console.warn("sortSectionMetadata: no metadata to sort");
+    return;
+  } // $FlowIgnore
+
+
+  m.metadata.sections.sort(function (a, b) {
+    var aId = _helperWasmBytecode.default.sections[a.section];
+    var bId = _helperWasmBytecode.default.sections[b.section];
+
+    if (typeof aId !== "number" || typeof bId !== "number") {
+      throw new Error("Section id not found");
+    }
+
+    return aId - bId;
+  });
+}
+
+function orderedInsertNode(m, n) {
+  assertHasLoc(n);
+  var didInsert = false;
+
+  if (n.type === "ModuleExport") {
+    m.fields.push(n);
+    return;
+  }
+
+  m.fields = m.fields.reduce(function (acc, field) {
+    var fieldEndCol = Infinity;
+
+    if (field.loc != null) {
+      // $FlowIgnore
+      fieldEndCol = field.loc.end.column;
+    } // $FlowIgnore: assertHasLoc ensures that
+
+
+    if (didInsert === false && n.loc.start.column < fieldEndCol) {
+      didInsert = true;
+      acc.push(n);
+    }
+
+    acc.push(field);
+    return acc;
+  }, []); // Handles empty modules or n is the last element
+
+  if (didInsert === false) {
+    m.fields.push(n);
+  }
+}
+
+function assertHasLoc(n) {
+  if (n.loc == null || n.loc.start == null || n.loc.end == null) {
+    throw new Error("Internal failure: node (".concat(JSON.stringify(n.type), ") has no location information"));
+  }
+}
+
+function getEndOfSection(s) {
+  assertHasLoc(s.size);
+  return s.startOffset + s.size.value + ( // $FlowIgnore
+  s.size.loc.end.column - s.size.loc.start.column);
+}
+
+function shiftLoc(node, delta) {
+  // $FlowIgnore
+  node.loc.start.column += delta; // $FlowIgnore
+
+  node.loc.end.column += delta;
+}
+
+function shiftSection(ast, node, delta) {
+  if (node.type !== "SectionMetadata") {
+    throw new Error("Can not shift node " + JSON.stringify(node.type));
+  }
+
+  node.startOffset += delta;
+
+  if (_typeof(node.size.loc) === "object") {
+    shiftLoc(node.size, delta);
+  } // Custom sections doesn't have vectorOfSize
+
+
+  if (_typeof(node.vectorOfSize) === "object" && _typeof(node.vectorOfSize.loc) === "object") {
+    shiftLoc(node.vectorOfSize, delta);
+  }
+
+  var sectionName = node.section; // shift node locations within that section
+
+  (0, _traverse.traverse)(ast, {
+    Node: function Node(_ref3) {
+      var node = _ref3.node;
+      var section = (0, _helperWasmBytecode.getSectionForNode)(node);
+
+      if (section === sectionName && _typeof(node.loc) === "object") {
+        shiftLoc(node, delta);
+      }
+    }
+  });
+}
+
+function signatureForOpcode(object, name) {
+  var opcodeName = name;
+
+  if (object !== undefined && object !== "") {
+    opcodeName = object + "." + name;
+  }
+
+  var sign = _signatures.signatures[opcodeName];
+
+  if (sign == undefined) {
+    // TODO: Uncomment this when br_table and others has been done
+    //throw new Error("Invalid opcode: "+opcodeName);
+    return [object, object];
+  }
+
+  return sign[0];
+}
+
+function getUniqueNameGenerator() {
+  var inc = {};
+  return function () {
+    var prefix = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : "temp";
+
+    if (!(prefix in inc)) {
+      inc[prefix] = 0;
+    } else {
+      inc[prefix] = inc[prefix] + 1;
+    }
+
+    return prefix + "_" + inc[prefix];
+  };
+}
+
+function getStartByteOffset(n) {
+  // $FlowIgnore
+  if (typeof n.loc === "undefined" || typeof n.loc.start === "undefined") {
+    throw new Error( // $FlowIgnore
+    "Can not get byte offset without loc informations, node: " + String(n.id));
+  }
+
+  return n.loc.start.column;
+}
+
+function getEndByteOffset(n) {
+  // $FlowIgnore
+  if (typeof n.loc === "undefined" || typeof n.loc.end === "undefined") {
+    throw new Error("Can not get byte offset without loc informations, node: " + n.type);
+  }
+
+  return n.loc.end.column;
+}
+
+function getFunctionBeginingByteOffset(n) {
+  if (!(n.body.length > 0)) {
+    throw new Error('n.body.length > 0' + " error: " + (undefined || "unknown"));
+  }
+
+  var _n$body = _slicedToArray(n.body, 1),
+      firstInstruction = _n$body[0];
+
+  return getStartByteOffset(firstInstruction);
+}
+
+function getEndBlockByteOffset(n) {
+  // $FlowIgnore
+  if (!(n.instr.length > 0 || n.body.length > 0)) {
+    throw new Error('n.instr.length > 0 || n.body.length > 0' + " error: " + (undefined || "unknown"));
+  }
+
+  var lastInstruction;
+
+  if (n.instr) {
+    // $FlowIgnore
+    lastInstruction = n.instr[n.instr.length - 1];
+  }
+
+  if (n.body) {
+    // $FlowIgnore
+    lastInstruction = n.body[n.body.length - 1];
+  }
+
+  if (!(_typeof(lastInstruction) === "object")) {
+    throw new Error('typeof lastInstruction === "object"' + " error: " + (undefined || "unknown"));
+  }
+
+  // $FlowIgnore
+  return getStartByteOffset(lastInstruction);
+}
+
+function getStartBlockByteOffset(n) {
+  // $FlowIgnore
+  if (!(n.instr.length > 0 || n.body.length > 0)) {
+    throw new Error('n.instr.length > 0 || n.body.length > 0' + " error: " + (undefined || "unknown"));
+  }
+
+  var fistInstruction;
+
+  if (n.instr) {
+    // $FlowIgnore
+    var _n$instr = _slicedToArray(n.instr, 1);
+
+    fistInstruction = _n$instr[0];
+  }
+
+  if (n.body) {
+    // $FlowIgnore
+    var _n$body2 = _slicedToArray(n.body, 1);
+
+    fistInstruction = _n$body2[0];
+  }
+
+  if (!(_typeof(fistInstruction) === "object")) {
+    throw new Error('typeof fistInstruction === "object"' + " error: " + (undefined || "unknown"));
+  }
+
+  // $FlowIgnore
+  return getStartByteOffset(fistInstruction);
+}

node_modules/@webassemblyjs/ast/package.json

@@ -0,0 +1,32 @@
+{
+  "name": "@webassemblyjs/ast",
+  "version": "1.11.1",
+  "description": "AST utils for webassemblyjs",
+  "keywords": [
+    "webassembly",
+    "javascript",
+    "ast"
+  ],
+  "main": "lib/index.js",
+  "module": "esm/index.js",
+  "author": "Sven Sauleau",
+  "license": "MIT",
+  "dependencies": {
+    "@webassemblyjs/helper-numbers": "1.11.1",
+    "@webassemblyjs/helper-wasm-bytecode": "1.11.1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/xtuc/webassemblyjs.git"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "devDependencies": {
+    "@webassemblyjs/helper-test-framework": "1.11.1",
+    "array.prototype.flatmap": "^1.2.1",
+    "dump-exports": "^0.1.0",
+    "mamacro": "^0.0.7"
+  },
+  "gitHead": "3f07e2db2031afe0ce686630418c542938c1674b"
+}

node_modules/@webassemblyjs/ast/scripts/generateNodeUtils.js

@@ -0,0 +1,219 @@
+const definitions = require("../src/definitions");
+const flatMap = require("array.prototype.flatmap");
+const {
+  typeSignature,
+  iterateProps,
+  mapProps,
+  filterProps,
+  unique
+} = require("./util");
+
+const stdout = process.stdout;
+
+const jsTypes = ["string", "number", "boolean"];
+
+const quote = value => `"${value}"`;
+
+function params(fields) {
+  const optionalDefault = field => (field.default ? ` = ${field.default}` : "");
+  return mapProps(fields)
+    .map(field => `${typeSignature(field)}${optionalDefault(field)}`)
+    .join(",");
+}
+
+function assertParamType({ assertNodeType, array, name, type }) {
+  if (array) {
+    // TODO - assert contents of array?
+    return `assert(typeof ${name} === "object" && typeof ${name}.length !== "undefined")\n`;
+  } else {
+    if (jsTypes.includes(type)) {
+      return `assert(
+          typeof ${name} === "${type}",
+          "Argument ${name} must be of type ${type}, given: " + typeof ${name}
+      )`;
+    }
+
+    if (assertNodeType === true) {
+      return `assert(
+        ${name}.type === "${type}",
+        "Argument ${name} must be of type ${type}, given: " + ${name}.type
+      )`;
+    }
+
+    return "";
+  }
+}
+
+function assertParam(meta) {
+  const paramAssertion = assertParamType(meta);
+
+  if (paramAssertion === "") {
+    return "";
+  }
+
+  if (meta.maybe || meta.optional) {
+    return `
+      if (${meta.name} !== null && ${meta.name} !== undefined) {
+        ${paramAssertion};
+      }
+    `;
+  } else {
+    return paramAssertion;
+  }
+}
+
+function assertParams(fields) {
+  return mapProps(fields)
+    .map(assertParam)
+    .join("\n");
+}
+
+function buildObject(typeDef) {
+  const optionalField = meta => {
+    if (meta.array) {
+      // omit optional array properties if the constructor function was supplied
+      // with an empty array
+      return `
+        if (typeof ${meta.name} !== "undefined" && ${meta.name}.length > 0) {
+          node.${meta.name} = ${meta.name};
+        }
+      `;
+    } else if (meta.type === "Object") {
+      // omit optional object properties if they have no keys
+      return `
+        if (typeof ${meta.name} !== "undefined" && Object.keys(${
+        meta.name
+      }).length !== 0) {
+          node.${meta.name} = ${meta.name};
+        }
+      `;
+    } else if (meta.type === "boolean") {
+      // omit optional boolean properties if they are not true
+      return `
+        if (${meta.name} === true) {
+          node.${meta.name} = true;
+        }
+      `;
+    } else {
+      return `
+        if (typeof ${meta.name} !== "undefined") {
+          node.${meta.name} = ${meta.name};
+        }
+      `;
+    }
+  };
+
+  const fields = mapProps(typeDef.fields)
+    .filter(f => !f.optional && !f.constant)
+    .map(f => f.name);
+
+  const constants = mapProps(typeDef.fields)
+    .filter(f => f.constant)
+    .map(f => `${f.name}: "${f.value}"`);
+
+  return `
+    const node: ${typeDef.flowTypeName || typeDef.name} = {
+      type: "${typeDef.name}",
+      ${constants.concat(fields).join(",")}
+    }
+
+    ${mapProps(typeDef.fields)
+      .filter(f => f.optional)
+      .map(optionalField)
+      .join("")}
+  `;
+}
+
+function lowerCamelCase(name) {
+  return name.substring(0, 1).toLowerCase() + name.substring(1);
+}
+
+function generate() {
+  stdout.write(`
+    // @flow
+
+    // THIS FILE IS AUTOGENERATED
+    // see scripts/generateNodeUtils.js
+
+    import { assert } from "mamacro";
+
+    function isTypeOf(t: string) {
+      return (n: Node) => n.type === t;
+    }
+
+    function assertTypeOf(t: string) {
+      return (n: Node) => assert(n.type === t);
+    }
+  `);
+
+  // Node builders
+  iterateProps(definitions, typeDefinition => {
+    stdout.write(`
+      export function ${lowerCamelCase(typeDefinition.name)} (
+        ${params(filterProps(typeDefinition.fields, f => !f.constant))}
+      ): ${typeDefinition.name} {
+
+        ${assertParams(filterProps(typeDefinition.fields, f => !f.constant))}
+        ${buildObject(typeDefinition)} 
+
+        return node;
+      }
+    `);
+  });
+
+  // Node testers
+  iterateProps(definitions, typeDefinition => {
+    stdout.write(`
+      export const is${typeDefinition.name} =
+        isTypeOf("${typeDefinition.name}");
+    `);
+  });
+
+  // Node union type testers
+  const unionTypes = unique(
+    flatMap(mapProps(definitions).filter(d => d.unionType), d => d.unionType)
+  );
+  unionTypes.forEach(unionType => {
+    stdout.write(
+      `
+      export const is${unionType} = (node: Node) => ` +
+        mapProps(definitions)
+          .filter(d => d.unionType && d.unionType.includes(unionType))
+          .map(d => `is${d.name}(node) `)
+          .join("||") +
+        ";\n\n"
+    );
+  });
+
+  // Node assertion
+  iterateProps(definitions, typeDefinition => {
+    stdout.write(`
+      export const assert${typeDefinition.name} =
+        assertTypeOf("${typeDefinition.name}");
+    `);
+  });
+
+  // a map from node type to its set of union types
+  stdout.write(
+    `
+    export const unionTypesMap = {` +
+      mapProps(definitions)
+        .filter(d => d.unionType)
+        .map(t => `"${t.name}": [${t.unionType.map(quote).join(",")}]\n`) +
+      `};
+      `
+  );
+
+  // an array of all node and union types
+  stdout.write(
+    `
+    export const nodeAndUnionTypes = [` +
+      mapProps(definitions)
+        .map(t => `"${t.name}"`)
+        .concat(unionTypes.map(quote))
+        .join(",") +
+      `];`
+  );
+}
+
+generate();

node_modules/@webassemblyjs/ast/scripts/generateTypeDefinitions.js

@@ -0,0 +1,47 @@
+const definitions = require("../src/definitions");
+const flatMap = require("array.prototype.flatmap");
+const { typeSignature, mapProps, iterateProps, unique } = require("./util");
+
+const stdout = process.stdout;
+
+function params(fields) {
+  return mapProps(fields)
+    .map(typeSignature)
+    .join(",");
+}
+
+function generate() {
+  stdout.write(`
+    // @flow
+    /* eslint no-unused-vars: off */
+
+    // THIS FILE IS AUTOGENERATED
+    // see scripts/generateTypeDefinitions.js
+  `);
+
+  // generate union types
+  const unionTypes = unique(
+    flatMap(mapProps(definitions).filter(d => d.unionType), d => d.unionType)
+  );
+  unionTypes.forEach(unionType => {
+    stdout.write(
+      `type ${unionType} = ` +
+        mapProps(definitions)
+          .filter(d => d.unionType && d.unionType.includes(unionType))
+          .map(d => d.name)
+          .join("|") +
+        ";\n\n"
+    );
+  });
+
+  // generate the type definitions
+  iterateProps(definitions, typeDef => {
+    stdout.write(`type ${typeDef.name} = {
+        ...BaseNode,
+        type: "${typeDef.name}",
+        ${params(typeDef.fields)}
+      };\n\n`);
+  });
+}
+
+generate();

node_modules/@webassemblyjs/ast/scripts/util.js

@@ -0,0 +1,38 @@
+function iterateProps(obj, iterator) {
+  Object.keys(obj).forEach(key => iterator({ ...obj[key], name: key }));
+}
+
+function mapProps(obj) {
+  return Object.keys(obj).map(key => ({ ...obj[key], name: key }));
+}
+
+function filterProps(obj, filter) {
+  const ret = {};
+  Object.keys(obj).forEach(key => {
+    if (filter(obj[key])) {
+      ret[key] = obj[key];
+    }
+  });
+  return ret;
+}
+
+function typeSignature(meta) {
+  const type = meta.array ? `Array<${meta.type}>` : meta.type;
+  if (meta.optional) {
+    return `${meta.name}?: ${type}`;
+  } else if (meta.maybe) {
+    return `${meta.name}: ?${type}`;
+  } else {
+    return `${meta.name}: ${type}`;
+  }
+}
+
+const unique = items => Array.from(new Set(items));
+
+module.exports = {
+  iterateProps,
+  mapProps,
+  filterProps,
+  typeSignature,
+  unique
+};