Patches

CHANGELOG.md

@@ -1,5 +1,11 @@
 # changelog
 
+## 0.10.0
+
+* Complete rewrite, resulting in ~40x speed increase ([#30](https://github.com/Rich-Harris/magic-string/pull/30))
+* Breaking – `magicString.locate` and `locateOrigin` are deprecated
+* More forgiving rules about contiguous patches, and which ranges are valid with `magicString.slice(...)`
+
 ## 0.9.1
 
 * Update deps

README.md

@@ -52,8 +52,6 @@ var s = new MagicString( 'problems = 99' );
 
 s.overwrite( 0, 8, 'answer' );
 s.toString(); // 'answer = 99'
-s.locate( 9 ); // 7 - the character originally at index 9 ('=') is now at index 7
-s.locateOrigin( 7 ); // 9
 
 s.overwrite( 11, 13, '42' ); // character indices always refer to the original string
 s.toString(); // 'answer = 42'
@@ -126,11 +124,11 @@ Inserts the specified `content` at the `index` in the original string. Returns `
 
 ### s.locate( index )
 
-Finds the location, in the generated string, of the character at `index` in the original string. Returns `null` if the character in question has been removed or overwritten.
+**DEPRECATED** since 0.10 – see [#30](https://github.com/Rich-Harris/magic-string/pull/30)
 
 ### s.locateOrigin( index )
 
-The opposite of `s.locate()`. Returns `null` if the character in question was inserted with `s.append()`, `s.prepend()` or `s.overwrite()`.
+**DEPRECATED** since 0.10 – see [#30](https://github.com/Rich-Harris/magic-string/pull/30)
 
 ### s.overwrite( start, end, content[, storeName] )
 

package.json

@@ -2,7 +2,7 @@
   "name": "magic-string",
   "description": "Modify strings, generate sourcemaps",
   "author": "Rich Harris",
-  "version": "0.9.1",
+  "version": "0.10.0",
   "repository": "https://github.com/rich-harris/magic-string",
   "main": "dist/magic-string.cjs.js",
   "jsnext:main": "dist/magic-string.es6.js",
@@ -13,6 +13,7 @@
   "devDependencies": {
     "babel-preset-es2015-rollup": "^1.0.0",
     "codecov.io": "^0.1.6",
+    "console-group": "^0.1.2",
     "es6-promise": "^3.0.2",
     "eslint": "^1.10.3",
     "istanbul": "^0.4.0",
@@ -22,7 +23,8 @@
     "rollup": "^0.22.0",
     "rollup-plugin-babel": "^2.2.0",
     "rollup-plugin-npm": "^1.1.0",
-    "source-map": "^0.5.3"
+    "source-map": "^0.5.3",
+    "source-map-support": "^0.4.0"
   },
   "keywords": [
     "string",
@@ -33,13 +35,16 @@
   ],
   "scripts": {
     "test": "mocha",
-    "pretest": "npm run build",
-    "pretest-coverage": "npm run build",
+    "pretest": "npm run build:cjs",
+    "pretest-coverage": "npm run build:cjs",
     "test-coverage": "rm -rf coverage/* && istanbul cover --report json node_modules/.bin/_mocha -- -u exports -R spec test/index.js",
     "posttest-coverage": "remap-istanbul -i coverage/coverage-final.json -o coverage/coverage-remapped.json -b dist && remap-istanbul -i coverage/coverage-final.json -o coverage/coverage-remapped.lcov -t lcovonly -b dist && remap-istanbul -i coverage/coverage-final.json -o coverage/coverage-remapped -t html -b dist",
     "ci": "npm run test-coverage && codecov < coverage/coverage-remapped.lcov",
-    "build": "rm -rf dist && rollup -c -f cjs -o dist/magic-string.cjs.js && rollup -c -f es6 -o dist/magic-string.es6.js && export DEPS=true && rollup -c -f umd -o dist/magic-string.umd.js",
-    "prepublish": "npm test",
+    "build:cjs": "rollup -c -f cjs -o dist/magic-string.cjs.js",
+    "build:es6": "rollup -c -f es6 -o dist/magic-string.es6.js",
+    "build:umd": "export DEPS=true && rollup -c -f umd -o dist/magic-string.umd.js",
+    "build": " npm run build:cjs && npm run build:es6 && npm run build:umd",
+    "prepublish": "rm -rf dist && npm test && npm run build:es6 && npm run build:umd",
     "lint": "eslint src"
   },
   "files": [

src/Bundle.js

@@ -6,7 +6,6 @@ import isObject from './utils/isObject.js';
 
 export default function Bundle ( options = {} ) {
 	this.intro = options.intro || '';
-	this.outro = options.outro || '';
 	this.separator = options.separator !== undefined ? options.separator : '\n';
 
 	this.sources = [];
@@ -65,7 +64,6 @@ Bundle.prototype = {
 	clone () {
 		const bundle = new Bundle({
 			intro: this.intro,
-			outro: this.outro,
 			separator: this.separator
 		});
 
@@ -85,8 +83,7 @@ Bundle.prototype = {
 
 		let names = [];
 		this.sources.forEach( source => {
-			Object.keys( source.content.nameLocations ).forEach( location => {
-				const name = source.content.nameLocations[ location ];
+			Object.keys( source.content.storedNames ).forEach( name => {
 				if ( !~names.indexOf( name ) ) names.push( name );
 			});
 		});
@@ -106,8 +103,7 @@ Bundle.prototype = {
 				}
 
 				return prefix + mappings;
-			}).join( '' ) +
-			getSemis( this.outro )
+			}).join( '' )
 		);
 
 		return new SourceMap({
@@ -158,7 +154,8 @@ Bundle.prototype = {
 				indentStart//: trailingNewline || /\r?\n$/.test( separator )  //true///\r?\n/.test( separator )
 			});
 
-			trailingNewline = source.content.str.slice( 0, -1 ) === '\n';
+			// TODO this is a very slow way to determine this
+			trailingNewline = source.content.toString().slice( 0, -1 ) === '\n';
 		});
 
 		if ( this.intro ) {
@@ -167,8 +164,6 @@ Bundle.prototype = {
 			});
 		}
 
-		this.outro = this.outro.replace( /^[^\n]/gm, indentStr + '$&' );
-
 		return this;
 	},
 
@@ -185,7 +180,7 @@ Bundle.prototype = {
 			return str;
 		}).join( '' );
 
-		return this.intro + body + this.outro;
+		return this.intro + body;
 	},
 
 	trimLines () {
@@ -201,45 +196,41 @@ Bundle.prototype = {
 		this.intro = this.intro.replace( rx, '' );
 
 		if ( !this.intro ) {
-			let source; // TODO put inside loop if safe
+			let source;
 			let i = 0;
 
 			do {
 				source = this.sources[i];
 
 				if ( !source ) {
-					this.outro = this.outro.replace( rx, '' );
 					break;
 				}
 
-				source.content.trimStart();
+				source.content.trimStart( charType );
 				i += 1;
-			} while ( source.content.str === '' );
+			} while ( source.content.toString() === '' ); // TODO faster way to determine non-empty source?
 		}
 
 		return this;
 	},
 
 	trimEnd ( charType ) {
 		const rx = new RegExp( ( charType || '\\s' ) + '+$' );
-		this.outro = this.outro.replace( rx, '' );
 
-		if ( !this.outro ) {
-			let source;
-			let i = this.sources.length - 1;
+		let source;
+		let i = this.sources.length - 1;
 
-			do {
-				source = this.sources[i];
+		do {
+			source = this.sources[i];
 
-				if ( !source ) {
-					this.intro = this.intro.replace( rx, '' );
-					break;
-				}
+			if ( !source ) {
+				this.intro = this.intro.replace( rx, '' );
+				break;
+			}
 
-				source.content.trimEnd(charType);
-				i -= 1;
-			} while ( source.content.str === '' );
-		}
+			source.content.trimEnd( charType );
+			i -= 1;
+		} while ( source.content.toString() === '' ); // TODO faster way to determine non-empty source?
 
 		return this;
 	}