flow like the river

BACK_BACK/node_modules/@parcel/utils/LICENSE

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+MIT License
+
+Copyright (c) 2017-present Devon Govett
+
+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.

BACK_BACK/node_modules/@parcel/utils/index.js

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+// Node 8 supports native async functions - no need to use compiled code!
+exports.promisify =
+  parseInt(process.versions.node, 10) < 8
+    ? require('./lib/promisify')
+    : require('./src/promisify');
+
+exports.errorUtils =
+  parseInt(process.versions.node, 10) < 8
+    ? require('./lib/errorUtils')
+    : require('./src/errorUtils');

BACK_BACK/node_modules/@parcel/utils/package.json

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+{
+  "name": "@parcel/utils",
+  "version": "1.11.0",
+  "description": "Blazing fast, zero configuration web application bundler",
+  "main": "index.js",
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/parcel-bundler/parcel.git"
+  },
+  "engines": {
+    "node": ">= 6.0.0"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "scripts": {
+    "test": "echo this package has no tests yet",
+    "test-ci": "yarn build && yarn test",
+    "format": "prettier --write \"./{src,bin,test}/**/*.{js,json,md}\"",
+    "lint": "eslint . && prettier \"./{src,bin,test}/**/*.{js,json,md}\" --list-different",
+    "build": "babel src -d lib",
+    "prepublish": "yarn build"
+  },
+  "gitHead": "34eb91e8e6991073e594bff731c333d09b0403b5"
+}

BACK_BACK/node_modules/@parcel/utils/src/.babelrc

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+{
+  "presets": [["@babel/preset-env", {
+    "targets": {
+      "node": "6"
+    }
+  }]],
+  "plugins": ["@babel/plugin-transform-runtime"]
+}

BACK_BACK/node_modules/@parcel/utils/src/.eslintrc.json

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+{
+  "extends": "../../../../.eslintrc.json"
+}

BACK_BACK/node_modules/@parcel/utils/src/errorUtils.js

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+function errorToJson(error) {
+  if (typeof error === 'string') {
+    return {message: error};
+  }
+
+  if (error instanceof Error) {
+    let jsonError = {
+      message: error.message,
+      stack: error.stack,
+      name: error.name
+    };
+    // Add all custom codeFrame properties
+    Object.keys(error).forEach(key => {
+      jsonError[key] = error[key];
+    });
+    return jsonError;
+  }
+}
+
+function jsonToError(json) {
+  if (json) {
+    let error = new Error(json.message);
+    Object.keys(json).forEach(key => {
+      error[key] = json[key];
+    });
+    return error;
+  }
+}
+
+exports.errorToJson = errorToJson;
+exports.jsonToError = jsonToError;

BACK_BACK/node_modules/@parcel/utils/src/promisify.js

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+module.exports = function(fn) {
+  return function(...args) {
+    return new Promise(function(resolve, reject) {
+      fn(...args, function(err, ...res) {
+        if (err) return reject(err);
+
+        if (res.length === 1) return resolve(res[0]);
+
+        resolve(res);
+      });
+    });
+  };
+};