fix: ES5 support (back to node v0.4)

broofa · Dec 22, 2017 · f14ccb6 · f14ccb6
1 parent ab5238a
commit f14ccb6
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diff --git a/Mime.js b/Mime.js
@@ -4,65 +4,68 @@
  * @param typeMap [Object] Map of MIME type -> Array[extensions]
  * @param ...
  */
-class Mime {
-  constructor() {
-    this._types = Object.create(null);
-    this._extensions = Object.create(null);
+function Mime() {
+  this._types = Object.create(null);
+  this._extensions = Object.create(null);
 
-    for (var i = 0; i < arguments.length; i++) {
-      this.define(arguments[i]);
-    }
+  for (var i = 0; i < arguments.length; i++) {
+    this.define(arguments[i]);
   }
+}
 
-  /**
-   * Define mimetype -> xtension mappings.  Each key is a mime-type that maps
-   * to an array of extensions associated with the type.  The first extension is
-   * used as the default extension for the type.
-   *
-   * e.g. mime.define({'audio/ogg', ['oga', 'ogg', 'spx']});
-   *
-   * @param map (Object) type definitions
-   */
-  define(typeMap, force) {
-    for (let type in typeMap) {
-      var extensions = typeMap[type];
-      for (let i = 0; i < extensions.length; i++) {
-        var ext = extensions[i];
-        if (!force && (ext in this._types)) {
-          throw new Error(`Attempt to change mapping for "${ext}" extension from "${this._types[ext]}" to "${type}". Pass \`force=true\` to allow this, otherwise remove "${ext}" from the list of extensions for "${type}".`);
-        }
-
-        this._types[ext] = type;
+/**
+ * Define mimetype -> xtension mappings.  Each key is a mime-type that maps
+ * to an array of extensions associated with the type.  The first extension is
+ * used as the default extension for the type.
+ *
+ * e.g. mime.define({'audio/ogg', ['oga', 'ogg', 'spx']});
+ *
+ * @param map (Object) type definitions
+ */
+Mime.prototype.define = function(typeMap, force) {
+  for (var type in typeMap) {
+    var extensions = typeMap[type];
+    for (var i = 0; i < extensions.length; i++) {
+      var ext = extensions[i];
+      if (!force && (ext in this._types)) {
+        throw new Error(
+          'Attempt to change mapping for "' + ext +
+          '" extension from "' + this._types[ext] + '" to "' + type +
+          '". Pass `force=true` to allow this, otherwise remove "' + ext +
+          '" from the list of extensions for "' + type + '".'
+        );
       }
 
-      // Use first extension as default
-      if (force || !this._extensions[type]) {
-        this._extensions[type] = extensions[0];
-      }
+      this._types[ext] = type;
+    }
+
+    // Use first extension as default
+    if (force || !this._extensions[type]) {
+      this._extensions[type] = extensions[0];
     }
   }
+};
 
-  /**
-   * Lookup a mime type based on extension
-   */
-  getType(path) {
-    path = String(path);
-    var last = path.replace(/^.*[/\\]/, '').toLowerCase();
-    var ext = last.replace(/^.*\./, '').toLowerCase();
+/**
+ * Lookup a mime type based on extension
+ */
+Mime.prototype.getType = function(path) {
+  path = String(path);
+  var last = path.replace(/^.*[/\\]/, '').toLowerCase();
+  var ext = last.replace(/^.*\./, '').toLowerCase();
 
-    var hasPath = last.length < path.length;
-    var hasDot = ext.length < last.length - 1;
+  var hasPath = last.length < path.length;
+  var hasDot = ext.length < last.length - 1;
 
-    return (hasDot || !hasPath) && this._types[ext] || null;
-  }
+  return (hasDot || !hasPath) && this._types[ext] || null;
+};
 
-  /**
-   * Return file extension associated with a mime type
-   */
-  getExtension(type) {
-    type = /^\s*([^;\s]*)/.test(type) && RegExp.$1;
-    return type && this._extensions[type.toLowerCase()] || null;
-  }
-}
+/**
+ * Return file extension associated with a mime type
+ */
+Mime.prototype.getExtension = function(type) {
+  type = /^\s*([^;\s]*)/.test(type) && RegExp.$1;
+  return type && this._extensions[type.toLowerCase()] || null;
+};
 
 module.exports = Mime;
diff --git a/README.md b/README.md
@@ -1,23 +1,46 @@
+<!--
+  -- This file is auto-generated from src/README_js.md. Changes should be made there.
+  -->
 # Mime
 
 A comprehensive, compact MIME type module.
 
 ## Version 2 Notes
 
-Version 2 is a breaking change from 1.x, as the semver implies.  Specifically:
+Version 2 is a breaking change from 1.x as the semver implies.  Specifically:
 
-* **ES6 support required (node@>=6)**
 * `lookup()` renamed to `getType()`
 * `extension()` renamed to `getExtension()`
 * `charset()` and `load()` methods have been removed
 
-If you prefer the legacy version of this module please `npm install mime@^1`.  Version 1 docs may be found [here](https://github.com/broofa/node-mime/tree/v1.x).
+If you prefer the legacy version of this module please `npm install mime@^1`.  Version 1 docs may be found [here](https://github.com/broofa/node-mime/tree/v1.4.0).
 
-## Install - NPM
+## Install
+
+### NPM
 ```
 npm install mime
 ```
 
+### Browser
+
+It is recommended that you use a bundler such as
+[webpack](https://webpack.github.io/) or [browserify](http://browserify.org/) to
+package your code.  However, browser-ready versions are available via wzrd.in.
+E.g. For the full version:
+
+    <script src="https://wzrd.in/standalone/mime@latest"></script>
+    <script>
+    mime.getType(...); // etc.
+    <script>
+
+Or, for the `mime/lite` version:
+
+    <script src="https://wzrd.in/standalone/mime%2flite@latest"></script>
+    <script>
+    mimelite.getType(...); // (Note `mimelite` here)
+    <script>
+
 ## Quick Start
 
 For the full version (800+ MIME types, 1,000+ extensions):
@@ -42,25 +65,6 @@ to 8KB for the full version.  To load the lite version:
 const mime = require('mime/lite');
 ```
 
-## Browser-ready Versions
-
-To use this module in the browser, you would typlically use
-[webpack](https://webpack.github.io/) or [browserify](http://browserify.org/) to
-package your code.  However, browser-ready versions are available via wzrd.in.
-E.g. For the full version:
-
-    <script src="https://wzrd.in/standalone/mime@latest"></script>
-    <script>
-    mime.getType(...); // etc.
-    <script>
-
-Or, for the `mime/lite` version:
-
-    <script src="https://wzrd.in/standalone/mime%2flite@latest"></script>
-    <script>
-    mimelite.getType(...); // (Note `mimelite` here)
-    <script>
-
 ## Mime .vs. mime-types .vs. mime-db modules
 
 For those of you wondering about the difference between these [popular] NPM modules,
@@ -182,4 +186,4 @@ E.g.
     application/javascript
 
 ----
-Markdown generated from [src/README_js.md](src/README_js.md) by [![RunMD Logo](http://i.imgur.com/h0FVyzU.png)](https://github.com/broofa/runmd)
+Markdown generated from [src/README_js.md](src/README_js.md) by [![RunMD Logo](http://i.imgur.com/h0FVyzU.png)](https://github.com/broofa/runmd)
diff --git a/index.js b/index.js
@@ -1,4 +1,4 @@
 'use strict';
 
-const Mime = require('./Mime');
+var Mime = require('./Mime');
 module.exports = new Mime(require('./types/standard'), require('./types/other'));
diff --git a/lite.js b/lite.js
@@ -1,4 +1,4 @@
 'use strict';
 
-const Mime = require('./Mime');
+var Mime = require('./Mime');
 module.exports = new Mime(require('./types/standard'));