This commit is contained in:
lalBi94
2023-03-05 13:23:23 +01:00
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import {PackageJson} from 'type-fest';
declare namespace meow {
type FlagType = 'string' | 'boolean' | 'number';
/**
Callback function to determine if a flag is required during runtime.
@param flags - Contains the flags converted to camel-case excluding aliases.
@param input - Contains the non-flag arguments.
@returns True if the flag is required, otherwise false.
*/
type IsRequiredPredicate = (flags: Readonly<AnyFlags>, input: readonly string[]) => boolean;
interface Flag<Type extends FlagType, Default> {
readonly type?: Type;
readonly alias?: string;
readonly default?: Default;
readonly isRequired?: boolean | IsRequiredPredicate;
readonly isMultiple?: boolean;
}
type StringFlag = Flag<'string', string>;
type BooleanFlag = Flag<'boolean', boolean>;
type NumberFlag = Flag<'number', number>;
type AnyFlag = StringFlag | BooleanFlag | NumberFlag;
type AnyFlags = Record<string, AnyFlag>;
interface Options<Flags extends AnyFlags> {
/**
Define argument flags.
The key is the flag name in camel-case and the value is an object with any of:
- `type`: Type of value. (Possible values: `string` `boolean` `number`)
- `alias`: Usually used to define a short flag alias.
- `default`: Default value when the flag is not specified.
- `isRequired`: Determine if the flag is required.
If it's only known at runtime whether the flag is required or not you can pass a Function instead of a boolean, which based on the given flags and other non-flag arguments should decide if the flag is required.
- `isMultiple`: Indicates a flag can be set multiple times. Values are turned into an array. (Default: false)
Multiple values are provided by specifying the flag multiple times, for example, `$ foo -u rainbow -u cat`. Space- or comma-separated values are *not* supported.
Note that flags are always defined using a camel-case key (`myKey`), but will match arguments in kebab-case (`--my-key`).
@example
```
flags: {
unicorn: {
type: 'string',
alias: 'u',
default: ['rainbow', 'cat'],
isMultiple: true,
isRequired: (flags, input) => {
if (flags.otherFlag) {
return true;
}
return false;
}
}
}
```
*/
readonly flags?: Flags;
/**
Description to show above the help text. Default: The package.json `"description"` property.
Set it to `false` to disable it altogether.
*/
readonly description?: string | false;
/**
The help text you want shown.
The input is reindented and starting/ending newlines are trimmed which means you can use a [template literal](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/template_strings) without having to care about using the correct amount of indent.
The description will be shown above your help text automatically.
Set it to `false` to disable it altogether.
*/
readonly help?: string | false;
/**
Set a custom version output. Default: The package.json `"version"` property.
Set it to `false` to disable it altogether.
*/
readonly version?: string | false;
/**
Automatically show the help text when the `--help` flag is present. Useful to set this value to `false` when a CLI manages child CLIs with their own help text.
This option is only considered when there is only one argument in `process.argv`.
*/
readonly autoHelp?: boolean;
/**
Automatically show the version text when the `--version` flag is present. Useful to set this value to `false` when a CLI manages child CLIs with their own version text.
This option is only considered when there is only one argument in `process.argv`.
*/
readonly autoVersion?: boolean;
/**
`package.json` as an `Object`. Default: Closest `package.json` upwards.
_You most likely don't need this option._
*/
readonly pkg?: Record<string, unknown>;
/**
Custom arguments object.
@default process.argv.slice(2)
*/
readonly argv?: readonly string[];
/**
Infer the argument type.
By default, the argument `5` in `$ foo 5` becomes a string. Enabling this would infer it as a number.
@default false
*/
readonly inferType?: boolean;
/**
Value of `boolean` flags not defined in `argv`.
If set to `undefined`, the flags not defined in `argv` will be excluded from the result. The `default` value set in `boolean` flags take precedence over `booleanDefault`.
_Note: If used in conjunction with `isMultiple`, the default flag value is set to `[]`._
__Caution: Explicitly specifying `undefined` for `booleanDefault` has different meaning from omitting key itself.__
@example
```
import meow = require('meow');
const cli = meow(`
Usage
$ foo
Options
--rainbow, -r Include a rainbow
--unicorn, -u Include a unicorn
--no-sparkles Exclude sparkles
Examples
$ foo
🌈 unicorns✨🌈
`, {
booleanDefault: undefined,
flags: {
rainbow: {
type: 'boolean',
default: true,
alias: 'r'
},
unicorn: {
type: 'boolean',
default: false,
alias: 'u'
},
cake: {
type: 'boolean',
alias: 'c'
},
sparkles: {
type: 'boolean',
default: true
}
}
});
//{
// flags: {
// rainbow: true,
// unicorn: false,
// sparkles: true
// },
// unnormalizedFlags: {
// rainbow: true,
// r: true,
// unicorn: false,
// u: false,
// sparkles: true
// },
// …
//}
```
*/
readonly booleanDefault?: boolean | null | undefined;
/**
Whether to use [hard-rejection](https://github.com/sindresorhus/hard-rejection) or not. Disabling this can be useful if you need to handle `process.on('unhandledRejection')` yourself.
@default true
*/
readonly hardRejection?: boolean;
/**
Whether to allow unknown flags or not.
@default true
*/
readonly allowUnknownFlags?: boolean;
}
type TypedFlag<Flag extends AnyFlag> =
Flag extends {type: 'number'}
? number
: Flag extends {type: 'string'}
? string
: Flag extends {type: 'boolean'}
? boolean
: unknown;
type PossiblyOptionalFlag<Flag extends AnyFlag, FlagType> =
Flag extends {isRequired: true}
? FlagType
: Flag extends {default: any}
? FlagType
: FlagType | undefined;
type TypedFlags<Flags extends AnyFlags> = {
[F in keyof Flags]: Flags[F] extends {isMultiple: true}
? PossiblyOptionalFlag<Flags[F], Array<TypedFlag<Flags[F]>>>
: PossiblyOptionalFlag<Flags[F], TypedFlag<Flags[F]>>
};
interface Result<Flags extends AnyFlags> {
/**
Non-flag arguments.
*/
input: string[];
/**
Flags converted to camelCase excluding aliases.
*/
flags: TypedFlags<Flags> & Record<string, unknown>;
/**
Flags converted camelCase including aliases.
*/
unnormalizedFlags: TypedFlags<Flags> & Record<string, unknown>;
/**
The `package.json` object.
*/
pkg: PackageJson;
/**
The help text used with `--help`.
*/
help: string;
/**
Show the help text and exit with code.
@param exitCode - The exit code to use. Default: `2`.
*/
showHelp: (exitCode?: number) => void;
/**
Show the version text and exit.
*/
showVersion: () => void;
}
}
/**
@param helpMessage - Shortcut for the `help` option.
@example
```
#!/usr/bin/env node
'use strict';
import meow = require('meow');
import foo = require('.');
const cli = meow(`
Usage
$ foo <input>
Options
--rainbow, -r Include a rainbow
Examples
$ foo unicorns --rainbow
🌈 unicorns 🌈
`, {
flags: {
rainbow: {
type: 'boolean',
alias: 'r'
}
}
});
//{
// input: ['unicorns'],
// flags: {rainbow: true},
// ...
//}
foo(cli.input[0], cli.flags);
```
*/
declare function meow<Flags extends meow.AnyFlags>(helpMessage: string, options?: meow.Options<Flags>): meow.Result<Flags>;
declare function meow<Flags extends meow.AnyFlags>(options?: meow.Options<Flags>): meow.Result<Flags>;
export = meow;

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'use strict';
const path = require('path');
const buildParserOptions = require('minimist-options');
const parseArguments = require('yargs-parser');
const camelCaseKeys = require('camelcase-keys');
const decamelize = require('decamelize');
const decamelizeKeys = require('decamelize-keys');
const trimNewlines = require('trim-newlines');
const redent = require('redent');
const readPkgUp = require('read-pkg-up');
const hardRejection = require('hard-rejection');
const normalizePackageData = require('normalize-package-data');
// Prevent caching of this module so module.parent is always accurate
delete require.cache[__filename];
const parentDir = path.dirname(module.parent && module.parent.filename ? module.parent.filename : '.');
const isFlagMissing = (flagName, definedFlags, receivedFlags, input) => {
const flag = definedFlags[flagName];
let isFlagRequired = true;
if (typeof flag.isRequired === 'function') {
isFlagRequired = flag.isRequired(receivedFlags, input);
if (typeof isFlagRequired !== 'boolean') {
throw new TypeError(`Return value for isRequired callback should be of type boolean, but ${typeof isFlagRequired} was returned.`);
}
}
if (typeof receivedFlags[flagName] === 'undefined') {
return isFlagRequired;
}
return flag.isMultiple && receivedFlags[flagName].length === 0;
};
const getMissingRequiredFlags = (flags, receivedFlags, input) => {
const missingRequiredFlags = [];
if (typeof flags === 'undefined') {
return [];
}
for (const flagName of Object.keys(flags)) {
if (flags[flagName].isRequired && isFlagMissing(flagName, flags, receivedFlags, input)) {
missingRequiredFlags.push({key: flagName, ...flags[flagName]});
}
}
return missingRequiredFlags;
};
const reportMissingRequiredFlags = missingRequiredFlags => {
console.error(`Missing required flag${missingRequiredFlags.length > 1 ? 's' : ''}`);
for (const flag of missingRequiredFlags) {
console.error(`\t--${decamelize(flag.key, '-')}${flag.alias ? `, -${flag.alias}` : ''}`);
}
};
const validateOptions = ({flags}) => {
const invalidFlags = Object.keys(flags).filter(flagKey => flagKey.includes('-') && flagKey !== '--');
if (invalidFlags.length > 0) {
throw new Error(`Flag keys may not contain '-': ${invalidFlags.join(', ')}`);
}
};
const reportUnknownFlags = unknownFlags => {
console.error([
`Unknown flag${unknownFlags.length > 1 ? 's' : ''}`,
...unknownFlags
].join('\n'));
};
const buildParserFlags = ({flags, booleanDefault}) => {
const parserFlags = {};
for (const [flagKey, flagValue] of Object.entries(flags)) {
const flag = {...flagValue};
if (
typeof booleanDefault !== 'undefined' &&
flag.type === 'boolean' &&
!Object.prototype.hasOwnProperty.call(flag, 'default')
) {
flag.default = flag.isMultiple ? [booleanDefault] : booleanDefault;
}
if (flag.isMultiple) {
flag.type = flag.type ? `${flag.type}-array` : 'array';
flag.default = flag.default || [];
delete flag.isMultiple;
}
parserFlags[flagKey] = flag;
}
return parserFlags;
};
const validateFlags = (flags, options) => {
for (const [flagKey, flagValue] of Object.entries(options.flags)) {
if (flagKey !== '--' && !flagValue.isMultiple && Array.isArray(flags[flagKey])) {
throw new Error(`The flag --${flagKey} can only be set once.`);
}
}
};
const meow = (helpText, options) => {
if (typeof helpText !== 'string') {
options = helpText;
helpText = '';
}
const foundPkg = readPkgUp.sync({
cwd: parentDir,
normalize: false
});
options = {
pkg: foundPkg ? foundPkg.packageJson : {},
argv: process.argv.slice(2),
flags: {},
inferType: false,
input: 'string',
help: helpText,
autoHelp: true,
autoVersion: true,
booleanDefault: false,
hardRejection: true,
allowUnknownFlags: true,
...options
};
if (options.hardRejection) {
hardRejection();
}
validateOptions(options);
let parserOptions = {
arguments: options.input,
...buildParserFlags(options)
};
parserOptions = decamelizeKeys(parserOptions, '-', {exclude: ['stopEarly', '--']});
if (options.inferType) {
delete parserOptions.arguments;
}
parserOptions = buildParserOptions(parserOptions);
parserOptions.configuration = {
...parserOptions.configuration,
'greedy-arrays': false
};
if (parserOptions['--']) {
parserOptions.configuration['populate--'] = true;
}
if (!options.allowUnknownFlags) {
// Collect unknown options in `argv._` to be checked later.
parserOptions.configuration['unknown-options-as-args'] = true;
}
const {pkg} = options;
const argv = parseArguments(options.argv, parserOptions);
let help = redent(trimNewlines((options.help || '').replace(/\t+\n*$/, '')), 2);
normalizePackageData(pkg);
process.title = pkg.bin ? Object.keys(pkg.bin)[0] : pkg.name;
let {description} = options;
if (!description && description !== false) {
({description} = pkg);
}
help = (description ? `\n ${description}\n` : '') + (help ? `\n${help}\n` : '\n');
const showHelp = code => {
console.log(help);
process.exit(typeof code === 'number' ? code : 2);
};
const showVersion = () => {
console.log(typeof options.version === 'string' ? options.version : pkg.version);
process.exit(0);
};
if (argv._.length === 0 && options.argv.length === 1) {
if (argv.version === true && options.autoVersion) {
showVersion();
}
if (argv.help === true && options.autoHelp) {
showHelp(0);
}
}
const input = argv._;
delete argv._;
if (!options.allowUnknownFlags) {
const unknownFlags = input.filter(item => typeof item === 'string' && item.startsWith('-'));
if (unknownFlags.length > 0) {
reportUnknownFlags(unknownFlags);
process.exit(2);
}
}
const flags = camelCaseKeys(argv, {exclude: ['--', /^\w$/]});
const unnormalizedFlags = {...flags};
validateFlags(flags, options);
for (const flagValue of Object.values(options.flags)) {
delete flags[flagValue.alias];
}
const missingRequiredFlags = getMissingRequiredFlags(options.flags, flags, input);
if (missingRequiredFlags.length > 0) {
reportMissingRequiredFlags(missingRequiredFlags);
process.exit(2);
}
return {
input,
flags,
unnormalizedFlags,
pkg,
help,
showHelp,
showVersion
};
};
module.exports = meow;

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MIT License
Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.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.

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// Basic
export * from './source/basic';
// Utilities
export {Except} from './source/except';
export {Mutable} from './source/mutable';
export {Merge} from './source/merge';
export {MergeExclusive} from './source/merge-exclusive';
export {RequireAtLeastOne} from './source/require-at-least-one';
export {RequireExactlyOne} from './source/require-exactly-one';
export {PartialDeep} from './source/partial-deep';
export {ReadonlyDeep} from './source/readonly-deep';
export {LiteralUnion} from './source/literal-union';
export {Promisable} from './source/promisable';
export {Opaque} from './source/opaque';
export {SetOptional} from './source/set-optional';
export {SetRequired} from './source/set-required';
export {ValueOf} from './source/value-of';
export {PromiseValue} from './source/promise-value';
export {AsyncReturnType} from './source/async-return-type';
export {ConditionalExcept} from './source/conditional-except';
export {ConditionalKeys} from './source/conditional-keys';
export {ConditionalPick} from './source/conditional-pick';
export {UnionToIntersection} from './source/union-to-intersection';
export {Stringified} from './source/stringified';
export {FixedLengthArray} from './source/fixed-length-array';
export {IterableElement} from './source/iterable-element';
export {Entry} from './source/entry';
export {Entries} from './source/entries';
export {SetReturnType} from './source/set-return-type';
export {Asyncify} from './source/asyncify';
// Miscellaneous
export {PackageJson} from './source/package-json';
export {TsConfigJson} from './source/tsconfig-json';

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MIT License
Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https:/sindresorhus.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.

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{
"name": "type-fest",
"version": "0.18.1",
"description": "A collection of essential TypeScript types",
"license": "(MIT OR CC0-1.0)",
"repository": "sindresorhus/type-fest",
"funding": "https://github.com/sponsors/sindresorhus",
"author": {
"name": "Sindre Sorhus",
"email": "sindresorhus@gmail.com",
"url": "https://sindresorhus.com"
},
"engines": {
"node": ">=10"
},
"scripts": {
"test": "xo && tsd"
},
"files": [
"index.d.ts",
"source"
],
"keywords": [
"typescript",
"ts",
"types",
"utility",
"util",
"utilities",
"omit",
"merge",
"json"
],
"devDependencies": {
"tsd": "^0.13.1",
"xo": "^0.28.2"
},
"types": "index.d.ts",
"xo": {
"rules": {
"@typescript-eslint/indent": "off",
"func-call-spacing": "off"
}
}
}

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import {PromiseValue} from './promise-value';
type AsyncFunction = (...args: any[]) => Promise<unknown>;
/**
Unwrap the return type of a function that returns a `Promise`.
There has been [discussion](https://github.com/microsoft/TypeScript/pull/35998) about implementing this type in TypeScript.
@example
```ts
import {AsyncReturnType} from 'type-fest';
import {asyncFunction} from 'api';
// This type resolves to the unwrapped return type of `asyncFunction`.
type Value = AsyncReturnType<typeof asyncFunction>;
async function doSomething(value: Value) {}
asyncFunction().then(value => doSomething(value));
```
*/
export type AsyncReturnType<Target extends AsyncFunction> = PromiseValue<ReturnType<Target>>;

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import {PromiseValue} from './promise-value';
import {SetReturnType} from './set-return-type';
/**
Create an async version of the given function type, by boxing the return type in `Promise` while keeping the same parameter types.
Use-case: You have two functions, one synchronous and one asynchronous that do the same thing. Instead of having to duplicate the type definition, you can use `Asyncify` to reuse the synchronous type.
@example
```
import {Asyncify} from 'type-fest';
// Synchronous function.
function getFooSync(someArg: SomeType): Foo {
// …
}
type AsyncifiedFooGetter = Asyncify<typeof getFooSync>;
//=> type AsyncifiedFooGetter = (someArg: SomeType) => Promise<Foo>;
// Same as `getFooSync` but asynchronous.
const getFooAsync: AsyncifiedFooGetter = (someArg) => {
// TypeScript now knows that `someArg` is `SomeType` automatically.
// It also knows that this function must return `Promise<Foo>`.
// If you have `@typescript-eslint/promise-function-async` linter rule enabled, it will even report that "Functions that return promises must be async.".
// …
}
```
*/
export type Asyncify<Fn extends (...args: any[]) => any> = SetReturnType<Fn, Promise<PromiseValue<ReturnType<Fn>>>>;

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/// <reference lib="esnext"/>
// TODO: This can just be `export type Primitive = not object` when the `not` keyword is out.
/**
Matches any [primitive value](https://developer.mozilla.org/en-US/docs/Glossary/Primitive).
*/
export type Primitive =
| null
| undefined
| string
| number
| boolean
| symbol
| bigint;
// TODO: Remove the `= unknown` sometime in the future when most users are on TS 3.5 as it's now the default
/**
Matches a [`class` constructor](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes).
*/
export type Class<T = unknown, Arguments extends any[] = any[]> = new(...arguments_: Arguments) => T;
/**
Matches any [typed array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray), like `Uint8Array` or `Float64Array`.
*/
export type TypedArray =
| Int8Array
| Uint8Array
| Uint8ClampedArray
| Int16Array
| Uint16Array
| Int32Array
| Uint32Array
| Float32Array
| Float64Array
| BigInt64Array
| BigUint64Array;
/**
Matches a JSON object.
This type can be useful to enforce some input to be JSON-compatible or as a super-type to be extended from. Don't use this as a direct return type as the user would have to double-cast it: `jsonObject as unknown as CustomResponse`. Instead, you could extend your CustomResponse type from it to ensure your type only uses JSON-compatible types: `interface CustomResponse extends JsonObject { … }`.
*/
export type JsonObject = {[Key in string]?: JsonValue};
/**
Matches a JSON array.
*/
export interface JsonArray extends Array<JsonValue> {}
/**
Matches any valid JSON value.
*/
export type JsonValue = string | number | boolean | null | JsonObject | JsonArray;
declare global {
interface SymbolConstructor {
readonly observable: symbol;
}
}
/**
Matches a value that is like an [Observable](https://github.com/tc39/proposal-observable).
*/
export interface ObservableLike {
subscribe(observer: (value: unknown) => void): void;
[Symbol.observable](): ObservableLike;
}

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import {Except} from './except';
import {ConditionalKeys} from './conditional-keys';
/**
Exclude keys from a shape that matches the given `Condition`.
This is useful when you want to create a new type with a specific set of keys from a shape. For example, you might want to exclude all the primitive properties from a class and form a new shape containing everything but the primitive properties.
@example
```
import {Primitive, ConditionalExcept} from 'type-fest';
class Awesome {
name: string;
successes: number;
failures: bigint;
run() {}
}
type ExceptPrimitivesFromAwesome = ConditionalExcept<Awesome, Primitive>;
//=> {run: () => void}
```
@example
```
import {ConditionalExcept} from 'type-fest';
interface Example {
a: string;
b: string | number;
c: () => void;
d: {};
}
type NonStringKeysOnly = ConditionalExcept<Example, string>;
//=> {b: string | number; c: () => void; d: {}}
```
*/
export type ConditionalExcept<Base, Condition> = Except<
Base,
ConditionalKeys<Base, Condition>
>;

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/**
Extract the keys from a type where the value type of the key extends the given `Condition`.
Internally this is used for the `ConditionalPick` and `ConditionalExcept` types.
@example
```
import {ConditionalKeys} from 'type-fest';
interface Example {
a: string;
b: string | number;
c?: string;
d: {};
}
type StringKeysOnly = ConditionalKeys<Example, string>;
//=> 'a'
```
To support partial types, make sure your `Condition` is a union of undefined (for example, `string | undefined`) as demonstrated below.
@example
```
type StringKeysAndUndefined = ConditionalKeys<Example, string | undefined>;
//=> 'a' | 'c'
```
*/
export type ConditionalKeys<Base, Condition> = NonNullable<
// Wrap in `NonNullable` to strip away the `undefined` type from the produced union.
{
// Map through all the keys of the given base type.
[Key in keyof Base]:
// Pick only keys with types extending the given `Condition` type.
Base[Key] extends Condition
// Retain this key since the condition passes.
? Key
// Discard this key since the condition fails.
: never;
// Convert the produced object into a union type of the keys which passed the conditional test.
}[keyof Base]
>;

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import {ConditionalKeys} from './conditional-keys';
/**
Pick keys from the shape that matches the given `Condition`.
This is useful when you want to create a new type from a specific subset of an existing type. For example, you might want to pick all the primitive properties from a class and form a new automatically derived type.
@example
```
import {Primitive, ConditionalPick} from 'type-fest';
class Awesome {
name: string;
successes: number;
failures: bigint;
run() {}
}
type PickPrimitivesFromAwesome = ConditionalPick<Awesome, Primitive>;
//=> {name: string; successes: number; failures: bigint}
```
@example
```
import {ConditionalPick} from 'type-fest';
interface Example {
a: string;
b: string | number;
c: () => void;
d: {};
}
type StringKeysOnly = ConditionalPick<Example, string>;
//=> {a: string}
```
*/
export type ConditionalPick<Base, Condition> = Pick<
Base,
ConditionalKeys<Base, Condition>
>;

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import {ArrayEntry, MapEntry, ObjectEntry, SetEntry} from './entry';
type ArrayEntries<BaseType extends readonly unknown[]> = Array<ArrayEntry<BaseType>>;
type MapEntries<BaseType> = Array<MapEntry<BaseType>>;
type ObjectEntries<BaseType> = Array<ObjectEntry<BaseType>>;
type SetEntries<BaseType extends Set<unknown>> = Array<SetEntry<BaseType>>;
/**
Many collections have an `entries` method which returns an array of a given object's own enumerable string-keyed property [key, value] pairs. The `Entries` type will return the type of that collection's entries.
For example the {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/entries|`Object`}, {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/entries|`Map`}, {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/entries|`Array`}, and {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set/entries|`Set`} collections all have this method. Note that `WeakMap` and `WeakSet` do not have this method since their entries are not enumerable.
@see `Entry` if you want to just access the type of a single entry.
@example
```
import {Entries} from 'type-fest';
interface Example {
someKey: number;
}
const manipulatesEntries = (examples: Entries<Example>) => examples.map(example => [
// Does some arbitrary processing on the key (with type information available)
example[0].toUpperCase(),
// Does some arbitrary processing on the value (with type information available)
example[1].toFixed()
]);
const example: Example = {someKey: 1};
const entries = Object.entries(example) as Entries<Example>;
const output = manipulatesEntries(entries);
// Objects
const objectExample = {a: 1};
const objectEntries: Entries<typeof objectExample> = [['a', 1]];
// Arrays
const arrayExample = ['a', 1];
const arrayEntries: Entries<typeof arrayExample> = [[0, 'a'], [1, 1]];
// Maps
const mapExample = new Map([['a', 1]]);
const mapEntries: Entries<typeof map> = [['a', 1]];
// Sets
const setExample = new Set(['a', 1]);
const setEntries: Entries<typeof setExample> = [['a', 'a'], [1, 1]];
```
*/
export type Entries<BaseType> =
BaseType extends Map<unknown, unknown> ? MapEntries<BaseType>
: BaseType extends Set<unknown> ? SetEntries<BaseType>
: BaseType extends unknown[] ? ArrayEntries<BaseType>
: BaseType extends object ? ObjectEntries<BaseType>
: never;

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type MapKey<BaseType> = BaseType extends Map<infer KeyType, unknown> ? KeyType : never;
type MapValue<BaseType> = BaseType extends Map<unknown, infer ValueType> ? ValueType : never;
export type ArrayEntry<BaseType extends readonly unknown[]> = [number, BaseType[number]];
export type MapEntry<BaseType> = [MapKey<BaseType>, MapValue<BaseType>];
export type ObjectEntry<BaseType> = [keyof BaseType, BaseType[keyof BaseType]];
export type SetEntry<BaseType> = BaseType extends Set<infer ItemType> ? [ItemType, ItemType] : never;
/**
Many collections have an `entries` method which returns an array of a given object's own enumerable string-keyed property [key, value] pairs. The `Entry` type will return the type of that collection's entry.
For example the {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/entries|`Object`}, {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/entries|`Map`}, {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/entries|`Array`}, and {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set/entries|`Set`} collections all have this method. Note that `WeakMap` and `WeakSet` do not have this method since their entries are not enumerable.
@see `Entries` if you want to just access the type of the array of entries (which is the return of the `.entries()` method).
@example
```
import {Entry} from 'type-fest';
interface Example {
someKey: number;
}
const manipulatesEntry = (example: Entry<Example>) => [
// Does some arbitrary processing on the key (with type information available)
example[0].toUpperCase(),
// Does some arbitrary processing on the value (with type information available)
example[1].toFixed(),
];
const example: Example = {someKey: 1};
const entry = Object.entries(example)[0] as Entry<Example>;
const output = manipulatesEntry(entry);
// Objects
const objectExample = {a: 1};
const objectEntry: Entry<typeof objectExample> = ['a', 1];
// Arrays
const arrayExample = ['a', 1];
const arrayEntryString: Entry<typeof arrayExample> = [0, 'a'];
const arrayEntryNumber: Entry<typeof arrayExample> = [1, 1];
// Maps
const mapExample = new Map([['a', 1]]);
const mapEntry: Entry<typeof map> = ['a', 1];
// Sets
const setExample = new Set(['a', 1]);
const setEntryString: Entry<typeof setExample> = ['a', 'a'];
const setEntryNumber: Entry<typeof setExample> = [1, 1];
```
*/
export type Entry<BaseType> =
BaseType extends Map<unknown, unknown> ? MapEntry<BaseType>
: BaseType extends Set<unknown> ? SetEntry<BaseType>
: BaseType extends unknown[] ? ArrayEntry<BaseType>
: BaseType extends object ? ObjectEntry<BaseType>
: never;

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/**
Create a type from an object type without certain keys.
This type is a stricter version of [`Omit`](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-5.html#the-omit-helper-type). The `Omit` type does not restrict the omitted keys to be keys present on the given type, while `Except` does. The benefits of a stricter type are avoiding typos and allowing the compiler to pick up on rename refactors automatically.
Please upvote [this issue](https://github.com/microsoft/TypeScript/issues/30825) if you want to have the stricter version as a built-in in TypeScript.
@example
```
import {Except} from 'type-fest';
type Foo = {
a: number;
b: string;
c: boolean;
};
type FooWithoutA = Except<Foo, 'a' | 'c'>;
//=> {b: string};
```
*/
export type Except<ObjectType, KeysType extends keyof ObjectType> = Pick<ObjectType, Exclude<keyof ObjectType, KeysType>>;

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/**
Methods to exclude.
*/
type ArrayLengthMutationKeys = 'splice' | 'push' | 'pop' | 'shift' | 'unshift';
/**
Create a type that represents an array of the given type and length. The array's length and the `Array` prototype methods that manipulate its length are excluded in the resulting type.
Please participate in [this issue](https://github.com/microsoft/TypeScript/issues/26223) if you want to have a similiar type built into TypeScript.
Use-cases:
- Declaring fixed-length tuples or arrays with a large number of items.
- Creating a range union (for example, `0 | 1 | 2 | 3 | 4` from the keys of such a type) without having to resort to recursive types.
- Creating an array of coordinates with a static length, for example, length of 3 for a 3D vector.
@example
```
import {FixedLengthArray} from 'type-fest';
type FencingTeam = FixedLengthArray<string, 3>;
const guestFencingTeam: FencingTeam = ['Josh', 'Michael', 'Robert'];
const homeFencingTeam: FencingTeam = ['George', 'John'];
//=> error TS2322: Type string[] is not assignable to type 'FencingTeam'
guestFencingTeam.push('Sam');
//=> error TS2339: Property 'push' does not exist on type 'FencingTeam'
```
*/
export type FixedLengthArray<Element, Length extends number, ArrayPrototype = [Element, ...Element[]]> = Pick<
ArrayPrototype,
Exclude<keyof ArrayPrototype, ArrayLengthMutationKeys>
> & {
[index: number]: Element;
[Symbol.iterator]: () => IterableIterator<Element>;
readonly length: Length;
};

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/**
Get the element type of an `Iterable`/`AsyncIterable`. For example, an array or a generator.
This can be useful, for example, if you want to get the type that is yielded in a generator function. Often the return type of those functions are not specified.
This type works with both `Iterable`s and `AsyncIterable`s, so it can be use with synchronous and asynchronous generators.
Here is an example of `IterableElement` in action with a generator function:
@example
```
function * iAmGenerator() {
yield 1;
yield 2;
}
type MeNumber = IterableElement<ReturnType<typeof iAmGenerator>>
```
And here is an example with an async generator:
@example
```
async function * iAmGeneratorAsync() {
yield 'hi';
yield true;
}
type MeStringOrBoolean = IterableElement<ReturnType<typeof iAmGeneratorAsync>>
```
Many types in JavaScript/TypeScript are iterables. This type works on all types that implement those interfaces. For example, `Array`, `Set`, `Map`, `stream.Readable`, etc.
An example with an array of strings:
@example
```
type MeString = IterableElement<string[]>
```
*/
export type IterableElement<TargetIterable> =
TargetIterable extends Iterable<infer ElementType> ?
ElementType :
TargetIterable extends AsyncIterable<infer ElementType> ?
ElementType :
never;

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import {Primitive} from './basic';
/**
Allows creating a union type by combining primitive types and literal types without sacrificing auto-completion in IDEs for the literal type part of the union.
Currently, when a union type of a primitive type is combined with literal types, TypeScript loses all information about the combined literals. Thus, when such type is used in an IDE with autocompletion, no suggestions are made for the declared literals.
This type is a workaround for [Microsoft/TypeScript#29729](https://github.com/Microsoft/TypeScript/issues/29729). It will be removed as soon as it's not needed anymore.
@example
```
import {LiteralUnion} from 'type-fest';
// Before
type Pet = 'dog' | 'cat' | string;
const pet: Pet = '';
// Start typing in your TypeScript-enabled IDE.
// You **will not** get auto-completion for `dog` and `cat` literals.
// After
type Pet2 = LiteralUnion<'dog' | 'cat', string>;
const pet: Pet2 = '';
// You **will** get auto-completion for `dog` and `cat` literals.
```
*/
export type LiteralUnion<
LiteralType,
BaseType extends Primitive
> = LiteralType | (BaseType & {_?: never});

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// Helper type. Not useful on its own.
type Without<FirstType, SecondType> = {[KeyType in Exclude<keyof FirstType, keyof SecondType>]?: never};
/**
Create a type that has mutually exclusive keys.
This type was inspired by [this comment](https://github.com/Microsoft/TypeScript/issues/14094#issuecomment-373782604).
This type works with a helper type, called `Without`. `Without<FirstType, SecondType>` produces a type that has only keys from `FirstType` which are not present on `SecondType` and sets the value type for these keys to `never`. This helper type is then used in `MergeExclusive` to remove keys from either `FirstType` or `SecondType`.
@example
```
import {MergeExclusive} from 'type-fest';
interface ExclusiveVariation1 {
exclusive1: boolean;
}
interface ExclusiveVariation2 {
exclusive2: string;
}
type ExclusiveOptions = MergeExclusive<ExclusiveVariation1, ExclusiveVariation2>;
let exclusiveOptions: ExclusiveOptions;
exclusiveOptions = {exclusive1: true};
//=> Works
exclusiveOptions = {exclusive2: 'hi'};
//=> Works
exclusiveOptions = {exclusive1: true, exclusive2: 'hi'};
//=> Error
```
*/
export type MergeExclusive<FirstType, SecondType> =
(FirstType | SecondType) extends object ?
(Without<FirstType, SecondType> & SecondType) | (Without<SecondType, FirstType> & FirstType) :
FirstType | SecondType;

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import {Except} from './except';
/**
Merge two types into a new type. Keys of the second type overrides keys of the first type.
@example
```
import {Merge} from 'type-fest';
type Foo = {
a: number;
b: string;
};
type Bar = {
b: number;
};
const ab: Merge<Foo, Bar> = {a: 1, b: 2};
```
*/
export type Merge<FirstType, SecondType> = Except<FirstType, Extract<keyof FirstType, keyof SecondType>> & SecondType;

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/**
Convert an object with `readonly` keys into a mutable object. Inverse of `Readonly<T>`.
This can be used to [store and mutate options within a class](https://github.com/sindresorhus/pageres/blob/4a5d05fca19a5fbd2f53842cbf3eb7b1b63bddd2/source/index.ts#L72), [edit `readonly` objects within tests](https://stackoverflow.com/questions/50703834), and [construct a `readonly` object within a function](https://github.com/Microsoft/TypeScript/issues/24509).
@example
```
import {Mutable} from 'type-fest';
type Foo = {
readonly a: number;
readonly b: string;
};
const mutableFoo: Mutable<Foo> = {a: 1, b: '2'};
mutableFoo.a = 3;
```
*/
export type Mutable<ObjectType> = {
// For each `Key` in the keys of `ObjectType`, make a mapped type by removing the `readonly` modifier from the key.
-readonly [KeyType in keyof ObjectType]: ObjectType[KeyType];
};

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/**
Create an opaque type, which hides its internal details from the public, and can only be created by being used explicitly.
The generic type parameter can be anything. It doesn't have to be an object.
[Read more about opaque types.](https://codemix.com/opaque-types-in-javascript/)
There have been several discussions about adding this feature to TypeScript via the `opaque type` operator, similar to how Flow does it. Unfortunately, nothing has (yet) moved forward:
- [Microsoft/TypeScript#15408](https://github.com/Microsoft/TypeScript/issues/15408)
- [Microsoft/TypeScript#15807](https://github.com/Microsoft/TypeScript/issues/15807)
@example
```
import {Opaque} from 'type-fest';
type AccountNumber = Opaque<number, 'AccountNumber'>;
type AccountBalance = Opaque<number, 'AccountBalance'>;
// The Token parameter allows the compiler to differentiate between types, whereas "unknown" will not. For example, consider the following structures:
type ThingOne = Opaque<string>;
type ThingTwo = Opaque<string>;
// To the compiler, these types are allowed to be cast to each other as they have the same underlying type. They are both `string & { __opaque__: unknown }`.
// To avoid this behaviour, you would instead pass the "Token" parameter, like so.
type NewThingOne = Opaque<string, 'ThingOne'>;
type NewThingTwo = Opaque<string, 'ThingTwo'>;
// Now they're completely separate types, so the following will fail to compile.
function createNewThingOne (): NewThingOne {
// As you can see, casting from a string is still allowed. However, you may not cast NewThingOne to NewThingTwo, and vice versa.
return 'new thing one' as NewThingOne;
}
// This will fail to compile, as they are fundamentally different types.
const thingTwo = createNewThingOne() as NewThingTwo;
// Here's another example of opaque typing.
function createAccountNumber(): AccountNumber {
return 2 as AccountNumber;
}
function getMoneyForAccount(accountNumber: AccountNumber): AccountBalance {
return 4 as AccountBalance;
}
// This will compile successfully.
getMoneyForAccount(createAccountNumber());
// But this won't, because it has to be explicitly passed as an `AccountNumber` type.
getMoneyForAccount(2);
// You can use opaque values like they aren't opaque too.
const accountNumber = createAccountNumber();
// This will not compile successfully.
const newAccountNumber = accountNumber + 2;
// As a side note, you can (and should) use recursive types for your opaque types to make them stronger and hopefully easier to type.
type Person = {
id: Opaque<number, Person>;
name: string;
};
```
*/
export type Opaque<Type, Token = unknown> = Type & {readonly __opaque__: Token};

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import {Primitive} from './basic';
/**
Create a type from another type with all keys and nested keys set to optional.
Use-cases:
- Merging a default settings/config object with another object, the second object would be a deep partial of the default object.
- Mocking and testing complex entities, where populating an entire object with its keys would be redundant in terms of the mock or test.
@example
```
import {PartialDeep} from 'type-fest';
const settings: Settings = {
textEditor: {
fontSize: 14;
fontColor: '#000000';
fontWeight: 400;
}
autocomplete: false;
autosave: true;
};
const applySavedSettings = (savedSettings: PartialDeep<Settings>) => {
return {...settings, ...savedSettings};
}
settings = applySavedSettings({textEditor: {fontWeight: 500}});
```
*/
export type PartialDeep<T> = T extends Primitive
? Partial<T>
: T extends Map<infer KeyType, infer ValueType>
? PartialMapDeep<KeyType, ValueType>
: T extends Set<infer ItemType>
? PartialSetDeep<ItemType>
: T extends ReadonlyMap<infer KeyType, infer ValueType>
? PartialReadonlyMapDeep<KeyType, ValueType>
: T extends ReadonlySet<infer ItemType>
? PartialReadonlySetDeep<ItemType>
: T extends ((...arguments: any[]) => unknown)
? T | undefined
: T extends object
? PartialObjectDeep<T>
: unknown;
/**
Same as `PartialDeep`, but accepts only `Map`s and as inputs. Internal helper for `PartialDeep`.
*/
interface PartialMapDeep<KeyType, ValueType> extends Map<PartialDeep<KeyType>, PartialDeep<ValueType>> {}
/**
Same as `PartialDeep`, but accepts only `Set`s as inputs. Internal helper for `PartialDeep`.
*/
interface PartialSetDeep<T> extends Set<PartialDeep<T>> {}
/**
Same as `PartialDeep`, but accepts only `ReadonlyMap`s as inputs. Internal helper for `PartialDeep`.
*/
interface PartialReadonlyMapDeep<KeyType, ValueType> extends ReadonlyMap<PartialDeep<KeyType>, PartialDeep<ValueType>> {}
/**
Same as `PartialDeep`, but accepts only `ReadonlySet`s as inputs. Internal helper for `PartialDeep`.
*/
interface PartialReadonlySetDeep<T> extends ReadonlySet<PartialDeep<T>> {}
/**
Same as `PartialDeep`, but accepts only `object`s as inputs. Internal helper for `PartialDeep`.
*/
type PartialObjectDeep<ObjectType extends object> = {
[KeyType in keyof ObjectType]?: PartialDeep<ObjectType[KeyType]>
};

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/**
Create a type that represents either the value or the value wrapped in `PromiseLike`.
Use-cases:
- A function accepts a callback that may either return a value synchronously or may return a promised value.
- This type could be the return type of `Promise#then()`, `Promise#catch()`, and `Promise#finally()` callbacks.
Please upvote [this issue](https://github.com/microsoft/TypeScript/issues/31394) if you want to have this type as a built-in in TypeScript.
@example
```
import {Promisable} from 'type-fest';
async function logger(getLogEntry: () => Promisable<string>): Promise<void> {
const entry = await getLogEntry();
console.log(entry);
}
logger(() => 'foo');
logger(() => Promise.resolve('bar'));
```
*/
export type Promisable<T> = T | PromiseLike<T>;

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/**
Returns the type that is wrapped inside a `Promise` type.
If the type is a nested Promise, it is unwrapped recursively until a non-Promise type is obtained.
If the type is not a `Promise`, the type itself is returned.
@example
```
import {PromiseValue} from 'type-fest';
type AsyncData = Promise<string>;
let asyncData: PromiseValue<AsyncData> = Promise.resolve('ABC');
type Data = PromiseValue<AsyncData>;
let data: Data = await asyncData;
// Here's an example that shows how this type reacts to non-Promise types.
type SyncData = PromiseValue<string>;
let syncData: SyncData = getSyncData();
// Here's an example that shows how this type reacts to recursive Promise types.
type RecursiveAsyncData = Promise<Promise<string> >;
let recursiveAsyncData: PromiseValue<RecursiveAsyncData> = Promise.resolve(Promise.resolve('ABC'));
```
*/
export type PromiseValue<PromiseType, Otherwise = PromiseType> = PromiseType extends Promise<infer Value>
? { 0: PromiseValue<Value>; 1: Value }[PromiseType extends Promise<unknown> ? 0 : 1]
: Otherwise;

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import {Primitive} from './basic';
/**
Convert `object`s, `Map`s, `Set`s, and `Array`s and all of their keys/elements into immutable structures recursively.
This is useful when a deeply nested structure needs to be exposed as completely immutable, for example, an imported JSON module or when receiving an API response that is passed around.
Please upvote [this issue](https://github.com/microsoft/TypeScript/issues/13923) if you want to have this type as a built-in in TypeScript.
@example
```
// data.json
{
"foo": ["bar"]
}
// main.ts
import {ReadonlyDeep} from 'type-fest';
import dataJson = require('./data.json');
const data: ReadonlyDeep<typeof dataJson> = dataJson;
export default data;
// test.ts
import data from './main';
data.foo.push('bar');
//=> error TS2339: Property 'push' does not exist on type 'readonly string[]'
```
*/
export type ReadonlyDeep<T> = T extends Primitive | ((...arguments: any[]) => unknown)
? T
: T extends ReadonlyMap<infer KeyType, infer ValueType>
? ReadonlyMapDeep<KeyType, ValueType>
: T extends ReadonlySet<infer ItemType>
? ReadonlySetDeep<ItemType>
: T extends object
? ReadonlyObjectDeep<T>
: unknown;
/**
Same as `ReadonlyDeep`, but accepts only `ReadonlyMap`s as inputs. Internal helper for `ReadonlyDeep`.
*/
interface ReadonlyMapDeep<KeyType, ValueType>
extends ReadonlyMap<ReadonlyDeep<KeyType>, ReadonlyDeep<ValueType>> {}
/**
Same as `ReadonlyDeep`, but accepts only `ReadonlySet`s as inputs. Internal helper for `ReadonlyDeep`.
*/
interface ReadonlySetDeep<ItemType>
extends ReadonlySet<ReadonlyDeep<ItemType>> {}
/**
Same as `ReadonlyDeep`, but accepts only `object`s as inputs. Internal helper for `ReadonlyDeep`.
*/
type ReadonlyObjectDeep<ObjectType extends object> = {
readonly [KeyType in keyof ObjectType]: ReadonlyDeep<ObjectType[KeyType]>
};

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import {Except} from './except';
/**
Create a type that requires at least one of the given keys. The remaining keys are kept as is.
@example
```
import {RequireAtLeastOne} from 'type-fest';
type Responder = {
text?: () => string;
json?: () => string;
secure?: boolean;
};
const responder: RequireAtLeastOne<Responder, 'text' | 'json'> = {
json: () => '{"message": "ok"}',
secure: true
};
```
*/
export type RequireAtLeastOne<ObjectType, KeysType extends keyof ObjectType = keyof ObjectType> =
{
// For each Key in KeysType make a mapped type
[Key in KeysType]: (
// …by picking that Key's type and making it required
Required<Pick<ObjectType, Key>>
)
}[KeysType]
// …then, make intersection types by adding the remaining keys to each mapped type.
& Except<ObjectType, KeysType>;

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// TODO: Remove this when we target TypeScript >=3.5.
type _Omit<T, K extends keyof any> = Pick<T, Exclude<keyof T, K>>;
/**
Create a type that requires exactly one of the given keys and disallows more. The remaining keys are kept as is.
Use-cases:
- Creating interfaces for components that only need one of the keys to display properly.
- Declaring generic keys in a single place for a single use-case that gets narrowed down via `RequireExactlyOne`.
The caveat with `RequireExactlyOne` is that TypeScript doesn't always know at compile time every key that will exist at runtime. Therefore `RequireExactlyOne` can't do anything to prevent extra keys it doesn't know about.
@example
```
import {RequireExactlyOne} from 'type-fest';
type Responder = {
text: () => string;
json: () => string;
secure: boolean;
};
const responder: RequireExactlyOne<Responder, 'text' | 'json'> = {
// Adding a `text` key here would cause a compile error.
json: () => '{"message": "ok"}',
secure: true
};
```
*/
export type RequireExactlyOne<ObjectType, KeysType extends keyof ObjectType = keyof ObjectType> =
{[Key in KeysType]: (
Required<Pick<ObjectType, Key>> &
Partial<Record<Exclude<KeysType, Key>, never>>
)}[KeysType] & _Omit<ObjectType, KeysType>;

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import {Except} from './except';
/**
Create a type that makes the given keys optional. The remaining keys are kept as is. The sister of the `SetRequired` type.
Use-case: You want to define a single model where the only thing that changes is whether or not some of the keys are optional.
@example
```
import {SetOptional} from 'type-fest';
type Foo = {
a: number;
b?: string;
c: boolean;
}
type SomeOptional = SetOptional<Foo, 'b' | 'c'>;
// type SomeOptional = {
// a: number;
// b?: string; // Was already optional and still is.
// c?: boolean; // Is now optional.
// }
```
*/
export type SetOptional<BaseType, Keys extends keyof BaseType = keyof BaseType> =
// Pick just the keys that are not optional from the base type.
Except<BaseType, Keys> &
// Pick the keys that should be optional from the base type and make them optional.
Partial<Pick<BaseType, Keys>> extends
// If `InferredType` extends the previous, then for each key, use the inferred type key.
infer InferredType
? {[KeyType in keyof InferredType]: InferredType[KeyType]}
: never;

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import {Except} from './except';
/**
Create a type that makes the given keys required. The remaining keys are kept as is. The sister of the `SetOptional` type.
Use-case: You want to define a single model where the only thing that changes is whether or not some of the keys are required.
@example
```
import {SetRequired} from 'type-fest';
type Foo = {
a?: number;
b: string;
c?: boolean;
}
type SomeRequired = SetRequired<Foo, 'b' | 'c'>;
// type SomeRequired = {
// a?: number;
// b: string; // Was already required and still is.
// c: boolean; // Is now required.
// }
```
*/
export type SetRequired<BaseType, Keys extends keyof BaseType = keyof BaseType> =
// Pick just the keys that are not required from the base type.
Except<BaseType, Keys> &
// Pick the keys that should be required from the base type and make them required.
Required<Pick<BaseType, Keys>> extends
// If `InferredType` extends the previous, then for each key, use the inferred type key.
infer InferredType
? {[KeyType in keyof InferredType]: InferredType[KeyType]}
: never;

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type IsAny<T> = 0 extends (1 & T) ? true : false; // https://stackoverflow.com/a/49928360/3406963
type IsNever<T> = [T] extends [never] ? true : false;
type IsUnknown<T> = IsNever<T> extends false ? T extends unknown ? unknown extends T ? IsAny<T> extends false ? true : false : false : false : false;
/**
Create a function type with a return type of your choice and the same parameters as the given function type.
Use-case: You want to define a wrapped function that returns something different while receiving the same parameters. For example, you might want to wrap a function that can throw an error into one that will return `undefined` instead.
@example
```
import {SetReturnType} from 'type-fest';
type MyFunctionThatCanThrow = (foo: SomeType, bar: unknown) => SomeOtherType;
type MyWrappedFunction = SetReturnType<MyFunctionThatCanThrow, SomeOtherType | undefined>;
//=> type MyWrappedFunction = (foo: SomeType, bar: unknown) => SomeOtherType | undefined;
```
*/
export type SetReturnType<Fn extends (...args: any[]) => any, TypeToReturn> =
// Just using `Parameters<Fn>` isn't ideal because it doesn't handle the `this` fake parameter.
Fn extends (this: infer ThisArg, ...args: infer Arguments) => any ? (
// If a function did not specify the `this` fake parameter, it will be inferred to `unknown`.
// We want to detect this situation just to display a friendlier type upon hovering on an IntelliSense-powered IDE.
IsUnknown<ThisArg> extends true ? (...args: Arguments) => TypeToReturn : (this: ThisArg, ...args: Arguments) => TypeToReturn
) : (
// This part should be unreachable, but we make it meaningful just in case…
(...args: Parameters<Fn>) => TypeToReturn
);

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/**
Create a type with the keys of the given type changed to `string` type.
Use-case: Changing interface values to strings in order to use them in a form model.
@example
```
import {Stringified} from 'type-fest';
type Car {
model: string;
speed: number;
}
const carForm: Stringified<Car> = {
model: 'Foo',
speed: '101'
};
```
*/
export type Stringified<ObjectType> = {[KeyType in keyof ObjectType]: string};

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/**
Convert a union type to an intersection type using [distributive conditional types](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-2-8.html#distributive-conditional-types).
Inspired by [this Stack Overflow answer](https://stackoverflow.com/a/50375286/2172153).
@example
```
import {UnionToIntersection} from 'type-fest';
type Union = {the(): void} | {great(arg: string): void} | {escape: boolean};
type Intersection = UnionToIntersection<Union>;
//=> {the(): void; great(arg: string): void; escape: boolean};
```
A more applicable example which could make its way into your library code follows.
@example
```
import {UnionToIntersection} from 'type-fest';
class CommandOne {
commands: {
a1: () => undefined,
b1: () => undefined,
}
}
class CommandTwo {
commands: {
a2: (argA: string) => undefined,
b2: (argB: string) => undefined,
}
}
const union = [new CommandOne(), new CommandTwo()].map(instance => instance.commands);
type Union = typeof union;
//=> {a1(): void; b1(): void} | {a2(argA: string): void; b2(argB: string): void}
type Intersection = UnionToIntersection<Union>;
//=> {a1(): void; b1(): void; a2(argA: string): void; b2(argB: string): void}
```
*/
export type UnionToIntersection<Union> = (
// `extends unknown` is always going to be the case and is used to convert the
// `Union` into a [distributive conditional
// type](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-2-8.html#distributive-conditional-types).
Union extends unknown
// The union type is used as the only argument to a function since the union
// of function arguments is an intersection.
? (distributedUnion: Union) => void
// This won't happen.
: never
// Infer the `Intersection` type since TypeScript represents the positional
// arguments of unions of functions as an intersection of the union.
) extends ((mergedIntersection: infer Intersection) => void)
? Intersection
: never;

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/**
Create a union of the given object's values, and optionally specify which keys to get the values from.
Please upvote [this issue](https://github.com/microsoft/TypeScript/issues/31438) if you want to have this type as a built-in in TypeScript.
@example
```
// data.json
{
'foo': 1,
'bar': 2,
'biz': 3
}
// main.ts
import {ValueOf} from 'type-fest';
import data = require('./data.json');
export function getData(name: string): ValueOf<typeof data> {
return data[name];
}
export function onlyBar(name: string): ValueOf<typeof data, 'bar'> {
return data[name];
}
// file.ts
import {getData, onlyBar} from './main';
getData('foo');
//=> 1
onlyBar('foo');
//=> TypeError ...
onlyBar('bar');
//=> 2
```
*/
export type ValueOf<ObjectType, ValueType extends keyof ObjectType = keyof ObjectType> = ObjectType[ValueType];

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node_modules/meow/package.json generated vendored Normal file
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{
"name": "meow",
"version": "9.0.0",
"description": "CLI app helper",
"license": "MIT",
"repository": "sindresorhus/meow",
"funding": "https://github.com/sponsors/sindresorhus",
"author": {
"name": "Sindre Sorhus",
"email": "sindresorhus@gmail.com",
"url": "https://sindresorhus.com"
},
"engines": {
"node": ">=10"
},
"scripts": {
"test": "xo && ava && tsd"
},
"files": [
"index.js",
"index.d.ts"
],
"keywords": [
"cli",
"bin",
"util",
"utility",
"helper",
"argv",
"command",
"line",
"meow",
"cat",
"kitten",
"parser",
"option",
"flags",
"input",
"cmd",
"console"
],
"dependencies": {
"@types/minimist": "^1.2.0",
"camelcase-keys": "^6.2.2",
"decamelize": "^1.2.0",
"decamelize-keys": "^1.1.0",
"hard-rejection": "^2.1.0",
"minimist-options": "4.1.0",
"normalize-package-data": "^3.0.0",
"read-pkg-up": "^7.0.1",
"redent": "^3.0.0",
"trim-newlines": "^3.0.0",
"type-fest": "^0.18.0",
"yargs-parser": "^20.2.3"
},
"devDependencies": {
"ava": "^2.4.0",
"execa": "^4.1.0",
"indent-string": "^4.0.0",
"tsd": "^0.13.1",
"xo": "^0.34.1"
},
"xo": {
"rules": {
"unicorn/no-process-exit": "off",
"node/no-unsupported-features/es-syntax": "off"
},
"ignores": [
"estest/index.js"
]
},
"ava": {
"files": [
"test/*"
]
}
}

352
node_modules/meow/readme.md generated vendored Normal file
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# meow
> CLI app helper
![](meow.gif)
## Features
- Parses arguments
- Converts flags to [camelCase](https://github.com/sindresorhus/camelcase)
- Negates flags when using the `--no-` prefix
- Outputs version when `--version`
- Outputs description and supplied help text when `--help`
- Makes unhandled rejected promises [fail hard](https://github.com/sindresorhus/hard-rejection) instead of the default silent fail
- Sets the process title to the binary name defined in package.json
## Install
```
$ npm install meow
```
## Usage
```
$ ./foo-app.js unicorns --rainbow
```
**CommonJS**
```js
#!/usr/bin/env node
'use strict';
const meow = require('meow');
const foo = require('.');
const cli = meow(`
Usage
$ foo <input>
Options
--rainbow, -r Include a rainbow
Examples
$ foo unicorns --rainbow
🌈 unicorns 🌈
`, {
flags: {
rainbow: {
type: 'boolean',
alias: 'r'
}
}
});
/*
{
input: ['unicorns'],
flags: {rainbow: true},
...
}
*/
foo(cli.input[0], cli.flags);
```
**ES Modules**
```js
#!/usr/bin/env node
import {createRequire} from 'module';
import foo from './lib/index.js';
const meow = createRequire(import.meta.url)('meow');
const cli = meow(`
Usage
$ foo <input>
Options
--rainbow, -r Include a rainbow
Examples
$ foo unicorns --rainbow
🌈 unicorns 🌈
`, {
flags: {
rainbow: {
type: 'boolean',
alias: 'r'
}
}
});
/*
{
input: ['unicorns'],
flags: {rainbow: true},
...
}
*/
foo(cli.input[0], cli.flags);
```
## API
### meow(helpText, options?)
### meow(options)
Returns an `object` with:
- `input` *(Array)* - Non-flag arguments
- `flags` *(Object)* - Flags converted to camelCase excluding aliases
- `unnormalizedFlags` *(Object)* - Flags converted to camelCase including aliases
- `pkg` *(Object)* - The `package.json` object
- `help` *(string)* - The help text used with `--help`
- `showHelp([exitCode=2])` *(Function)* - Show the help text and exit with `exitCode`
- `showVersion()` *(Function)* - Show the version text and exit
#### helpText
Type: `string`
Shortcut for the `help` option.
#### options
Type: `object`
##### flags
Type: `object`
Define argument flags.
The key is the flag name in camel-case and the value is an object with any of:
- `type`: Type of value. (Possible values: `string` `boolean` `number`)
- `alias`: Usually used to define a short flag alias.
- `default`: Default value when the flag is not specified.
- `isRequired`: Determine if the flag is required. (Default: false)
- If it's only known at runtime whether the flag is required or not, you can pass a `Function` instead of a `boolean`, which based on the given flags and other non-flag arguments, should decide if the flag is required. Two arguments are passed to the function:
- The first argument is the **flags** object, which contains the flags converted to camel-case excluding aliases.
- The second argument is the **input** string array, which contains the non-flag arguments.
- The function should return a `boolean`, true if the flag is required, otherwise false.
- `isMultiple`: Indicates a flag can be set multiple times. Values are turned into an array. (Default: false)
- Multiple values are provided by specifying the flag multiple times, for example, `$ foo -u rainbow -u cat`. Space- or comma-separated values are [currently *not* supported](https://github.com/sindresorhus/meow/issues/164).
Note that flags are always defined using a camel-case key (`myKey`), but will match arguments in kebab-case (`--my-key`).
Example:
```js
flags: {
unicorn: {
type: 'string',
alias: 'u',
default: ['rainbow', 'cat'],
isMultiple: true,
isRequired: (flags, input) => {
if (flags.otherFlag) {
return true;
}
return false;
}
}
}
```
##### description
Type: `string | boolean`\
Default: The package.json `"description"` property
Description to show above the help text.
Set it to `false` to disable it altogether.
##### help
Type: `string | boolean`
The help text you want shown.
The input is reindented and starting/ending newlines are trimmed which means you can use a [template literal](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/template_strings) without having to care about using the correct amount of indent.
The description will be shown above your help text automatically.
##### version
Type: `string | boolean`\
Default: The package.json `"version"` property
Set a custom version output.
##### autoHelp
Type: `boolean`\
Default: `true`
Automatically show the help text when the `--help` flag is present. Useful to set this value to `false` when a CLI manages child CLIs with their own help text.
This option is only considered when there is only one argument in `process.argv`.
##### autoVersion
Type: `boolean`\
Default: `true`
Automatically show the version text when the `--version` flag is present. Useful to set this value to `false` when a CLI manages child CLIs with their own version text.
This option is only considered when there is only one argument in `process.argv`.
##### pkg
Type: `object`\
Default: Closest package.json upwards
package.json as an `object`.
*You most likely don't need this option.*
##### argv
Type: `string[]`\
Default: `process.argv.slice(2)`
Custom arguments object.
##### inferType
Type: `boolean`\
Default: `false`
Infer the argument type.
By default, the argument `5` in `$ foo 5` becomes a string. Enabling this would infer it as a number.
##### booleanDefault
Type: `boolean | null | undefined`\
Default: `false`
Value of `boolean` flags not defined in `argv`.
If set to `undefined`, the flags not defined in `argv` will be excluded from the result.
The `default` value set in `boolean` flags take precedence over `booleanDefault`.
_Note: If used in conjunction with `isMultiple`, the default flag value is set to `[]`._
__Caution: Explicitly specifying `undefined` for `booleanDefault` has different meaning from omitting key itself.__
Example:
```js
const meow = require('meow');
const cli = meow(`
Usage
$ foo
Options
--rainbow, -r Include a rainbow
--unicorn, -u Include a unicorn
--no-sparkles Exclude sparkles
Examples
$ foo
🌈 unicorns✨🌈
`, {
booleanDefault: undefined,
flags: {
rainbow: {
type: 'boolean',
default: true,
alias: 'r'
},
unicorn: {
type: 'boolean',
default: false,
alias: 'u'
},
cake: {
type: 'boolean',
alias: 'c'
},
sparkles: {
type: 'boolean',
default: true
}
}
});
/*
{
flags: {
rainbow: true,
unicorn: false,
sparkles: true
},
unnormalizedFlags: {
rainbow: true,
r: true,
unicorn: false,
u: false,
sparkles: true
},
}
*/
```
##### hardRejection
Type: `boolean`\
Default: `true`
Whether to use [`hard-rejection`](https://github.com/sindresorhus/hard-rejection) or not. Disabling this can be useful if you need to handle `process.on('unhandledRejection')` yourself.
#### allowUnknownFlags
Type `boolean`\
Default: `true`
Whether to allow unknown flags or not.
## Promises
Meow will make unhandled rejected promises [fail hard](https://github.com/sindresorhus/hard-rejection) instead of the default silent fail. Meaning you don't have to manually `.catch()` promises used in your CLI.
## Tips
See [`chalk`](https://github.com/chalk/chalk) if you want to colorize the terminal output.
See [`get-stdin`](https://github.com/sindresorhus/get-stdin) if you want to accept input from stdin.
See [`conf`](https://github.com/sindresorhus/conf) if you need to persist some data.
See [`update-notifier`](https://github.com/yeoman/update-notifier) if you want update notifications.
[More useful CLI utilities…](https://github.com/sindresorhus/awesome-nodejs#command-line-utilities)
---
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