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node_modules/nyc/lib/hash.js

@@ -0,0 +1,30 @@
+'use strict'
+
+function getInvalidatingOptions (config) {
+  return [
+    'compact',
+    'esModules',
+    'ignoreClassMethods',
+    'instrument',
+    'instrumenter',
+    'parserPlugins',
+    'preserveComments',
+    'produceSourceMap',
+    'sourceMap'
+  ].reduce((acc, optName) => {
+    acc[optName] = config[optName]
+    return acc
+  }, {})
+}
+
+module.exports = {
+  salt (config) {
+    return JSON.stringify({
+      modules: {
+        'istanbul-lib-instrument': require('istanbul-lib-instrument/package.json').version,
+        nyc: require('../package.json').version
+      },
+      nycrc: getInvalidatingOptions(config)
+    })
+  }
+}