node fixes, updates

3 files changed, 118 insertions, 0 deletions

diff --git a/node_modules/babel-plugin-transform-regexp-constructors/README.md b/node_modules/babel-plugin-transform-regexp-constructors/README.md
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+# babel-plugin-transform-regexp-constructors
+
+This changes RegExp constructors into literals if the RegExp arguments are strings.
+
+## Example
+
+**In**
+
+```javascript
+const foo = 'ab+';
+var a = new RegExp(foo+'c', 'i');
+```
+
+**Out**
+
+```javascript
+const foo = 'ab+';
+var a = /ab+c/i;
+```
+
+## Installation
+
+```sh
+npm install babel-plugin-transform-regexp-constructors --save-dev
+```
+
+## Usage
+
+### Via `.babelrc` (Recommended)
+
+**.babelrc**
+
+```json
+{
+  "plugins": ["transform-regexp-constructors"]
+}
+```
+
+### Via CLI
+
+```sh
+babel --plugins transform-regexp-constructors script.js
+```
+
+### Via Node API
+
+```javascript
+require("@babel/core").transform("code", {
+  plugins: ["transform-regexp-constructors"]
+});
+```
diff --git a/node_modules/babel-plugin-transform-regexp-constructors/lib/index.js b/node_modules/babel-plugin-transform-regexp-constructors/lib/index.js
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+"use strict";
+
+function createRegExpLiteral(args, prettify, t) {
+  const evaluatedArgs = args.map(a => a.evaluate());
+
+  if (!evaluatedArgs.every(a => a.confident && typeof a.value === "string")) {
+    return;
+  }
+
+  let pattern = evaluatedArgs.length >= 1 && evaluatedArgs[0].value !== "" ? evaluatedArgs[0].value : "(?:)";
+  const flags = evaluatedArgs.length >= 2 ? evaluatedArgs[1].value : "";
+  pattern = new RegExp(pattern).source;
+
+  if (prettify) {
+    pattern = pattern.replace(/\n/g, "\\n").replace(/\u2028/g, "\\u2028").replace(/\u2029/g, "\\u2029").replace(/[\b]/g, "[\\b]").replace(/\v/g, "\\v").replace(/\f/g, "\\f").replace(/\r/g, "\\r");
+  }
+
+  pattern = pattern.replace(/\0/g, "\\0");
+  return t.regExpLiteral(pattern, flags);
+}
+
+function maybeReplaceWithRegExpLiteral(path, t) {
+  if (!t.isIdentifier(path.node.callee, {
+    name: "RegExp"
+  })) {
+    return;
+  }
+
+  const regExpLiteral = createRegExpLiteral(path.get("arguments"), true, t);
+
+  if (regExpLiteral) {
+    path.replaceWith(regExpLiteral);
+  }
+}
+
+module.exports = function ({
+  types: t
+}) {
+  return {
+    name: "transform-regexp-constructors",
+    visitor: {
+      NewExpression(path) {
+        maybeReplaceWithRegExpLiteral(path, t);
+      },
+
+      CallExpression(path) {
+        // equivalent to `new RegExp()` according to §21.2.3
+        maybeReplaceWithRegExpLiteral(path, t);
+      }
+
+    }
+  };
+};
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diff --git a/node_modules/babel-plugin-transform-regexp-constructors/package.json b/node_modules/babel-plugin-transform-regexp-constructors/package.json
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+{
+  "name": "babel-plugin-transform-regexp-constructors",
+  "version": "0.4.3",
+  "description": "This changes RegExp constructors into literals if the RegExp arguments are strings.",
+  "keywords": [
+    "babel-plugin"
+  ],
+  "homepage": "https://github.com/babel/minify#readme",
+  "bugs": "https://github.com/babel/minify/issues",
+  "license": "MIT",
+  "author": "shinew",
+  "main": "lib/index.js",
+  "repository": "https://github.com/babel/minify/tree/master/packages/babel-plugin-transform-regexp-constructors"
+}