magic-string - npm Package Compare versions

Comparing version 0.22.5 to 0.23.0

CHANGELOG.md

 # magic-string changelog
 
+## 0.23.0
+
+* Use `sourcemap-codec` for improved performance ([#133](https://github.com/Rich-Harris/magic-string/pull/133))
+
 ## 0.22.5
@@ -4,0 +8,0 @@

dist/magic-string.cjs.js

 'use strict';
 
-var vlq = require('vlq');
-
 function Chunk ( start, end, content ) {
@@ -283,13 +281,57 @@ this.start = start;
 
+var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
+function encode(decoded) {
+    var sourceFileIndex = 0; // second field
+    var sourceCodeLine = 0; // third field
+    var sourceCodeColumn = 0; // fourth field
+    var nameIndex = 0; // fifth field
+    var mappings = '';
+    for (var i = 0; i < decoded.length; i++) {
+        var line = decoded[i];
+        if (i > 0)
+            mappings += ';';
+        if (line.length === 0)
+            continue;
+        var generatedCodeColumn = 0; // first field
+        var lineMappings = [];
+        for (var _i = 0, line_1 = line; _i < line_1.length; _i++) {
+            var segment = line_1[_i];
+            var segmentMappings = encodeInteger(segment[0] - generatedCodeColumn);
+            generatedCodeColumn = segment[0];
+            if (segment.length > 1) {
+                segmentMappings +=
+                    encodeInteger(segment[1] - sourceFileIndex) +
+                        encodeInteger(segment[2] - sourceCodeLine) +
+                        encodeInteger(segment[3] - sourceCodeColumn);
+                sourceFileIndex = segment[1];
+                sourceCodeLine = segment[2];
+                sourceCodeColumn = segment[3];
+            }
+            if (segment.length === 5) {
+                segmentMappings += encodeInteger(segment[4] - nameIndex);
+                nameIndex = segment[4];
+            }
+            lineMappings.push(segmentMappings);
+        }
+        mappings += lineMappings.join(',');
+    }
+    return mappings;
+}
+function encodeInteger(num) {
+    var result = '';
+    num = num < 0 ? (-num << 1) | 1 : num << 1;
+    do {
+        var clamped = num & 31;
+        num >>= 5;
+        if (num > 0) {
+            clamped |= 32;
+        }
+        result += chars[clamped];
+    } while (num > 0);
+    return result;
+}
+
 function Mappings ( hires ) {
 	var this$1 = this;
 
-	var offsets = {
-		generatedCodeColumn: 0,
-		sourceIndex: 0,
-		sourceCodeLine: 0,
-		sourceCodeColumn: 0,
-		sourceCodeName: 0
-	};
-
 	var generatedCodeLine = 0;
@@ -305,8 +347,12 @@ var generatedCodeColumn = 0;
 		if ( content.length ) {
-			rawSegments.push([
+			var segment = [
 				generatedCodeColumn,
 				sourceIndex,
 				loc.line,
-				loc.column,
-				nameIndex ]);
+				loc.column
+			];
+			if ( nameIndex >= 0 ) {
+				segment.push( nameIndex );
+			}
+			rawSegments.push( segment );
 		} else if ( pending ) {
@@ -330,4 +376,3 @@ rawSegments.push( pending );
 					loc.line,
-					loc.column,
-					-1
+					loc.column
 				]);
@@ -355,4 +400,4 @@ }
 			loc.line,
-			loc.column,
-			-1 ];
+			loc.column
+		];
 	};
@@ -364,38 +409,16 @@
 		var lines = str.split( '\n' );
-		var lastLine = lines.pop();
 
-		if ( lines.length ) {
-			generatedCodeLine += lines.length;
-			this$1.raw[ generatedCodeLine ] = rawSegments = [];
-			generatedCodeColumn = lastLine.length;
-		} else {
-			generatedCodeColumn += lastLine.length;
+		if ( lines.length > 1 ) {
+			for ( var i = 0; i < lines.length - 1; i++ ) {
+				generatedCodeLine++;
+				this$1.raw[generatedCodeLine] = rawSegments = [];
+			}
+			generatedCodeColumn = 0;
 		}
+
+		generatedCodeColumn += lines[lines.length - 1].length;
 	};
 
 	this.encode = function () {
-		return this$1.raw.map( function (segments) {
-			var generatedCodeColumn = 0;
-
-			return segments.map( function (segment) {
-				var arr = [
-					segment[0] - generatedCodeColumn,
-					segment[1] - offsets.sourceIndex,
-					segment[2] - offsets.sourceCodeLine,
-					segment[3] - offsets.sourceCodeColumn
-				];
-
-				generatedCodeColumn = segment[0];
-				offsets.sourceIndex = segment[1];
-				offsets.sourceCodeLine = segment[2];
-				offsets.sourceCodeColumn = segment[3];
-
-				if ( ~segment[4] ) {
-					arr.push( segment[4] - offsets.sourceCodeName );
-					offsets.sourceCodeName = segment[4];
-				}
-
-				return vlq.encode( arr );
-			}).join( ',' );
-		}).join( ';' );
+		return encode(this$1.raw);
 	};
@@ -402,0 +425,0 @@ }

dist/magic-string.es.js

@@ -1,3 +0,1 @@
-import { encode } from 'vlq';
-
 function Chunk ( start, end, content ) {
@@ -281,13 +279,57 @@ this.start = start;
 
+var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
+function encode(decoded) {
+    var sourceFileIndex = 0; // second field
+    var sourceCodeLine = 0; // third field
+    var sourceCodeColumn = 0; // fourth field
+    var nameIndex = 0; // fifth field
+    var mappings = '';
+    for (var i = 0; i < decoded.length; i++) {
+        var line = decoded[i];
+        if (i > 0)
+            mappings += ';';
+        if (line.length === 0)
+            continue;
+        var generatedCodeColumn = 0; // first field
+        var lineMappings = [];
+        for (var _i = 0, line_1 = line; _i < line_1.length; _i++) {
+            var segment = line_1[_i];
+            var segmentMappings = encodeInteger(segment[0] - generatedCodeColumn);
+            generatedCodeColumn = segment[0];
+            if (segment.length > 1) {
+                segmentMappings +=
+                    encodeInteger(segment[1] - sourceFileIndex) +
+                        encodeInteger(segment[2] - sourceCodeLine) +
+                        encodeInteger(segment[3] - sourceCodeColumn);
+                sourceFileIndex = segment[1];
+                sourceCodeLine = segment[2];
+                sourceCodeColumn = segment[3];
+            }
+            if (segment.length === 5) {
+                segmentMappings += encodeInteger(segment[4] - nameIndex);
+                nameIndex = segment[4];
+            }
+            lineMappings.push(segmentMappings);
+        }
+        mappings += lineMappings.join(',');
+    }
+    return mappings;
+}
+function encodeInteger(num) {
+    var result = '';
+    num = num < 0 ? (-num << 1) | 1 : num << 1;
+    do {
+        var clamped = num & 31;
+        num >>= 5;
+        if (num > 0) {
+            clamped |= 32;
+        }
+        result += chars[clamped];
+    } while (num > 0);
+    return result;
+}
+
 function Mappings ( hires ) {
 	var this$1 = this;
 
-	var offsets = {
-		generatedCodeColumn: 0,
-		sourceIndex: 0,
-		sourceCodeLine: 0,
-		sourceCodeColumn: 0,
-		sourceCodeName: 0
-	};
-
 	var generatedCodeLine = 0;
@@ -303,8 +345,12 @@ var generatedCodeColumn = 0;
 		if ( content.length ) {
-			rawSegments.push([
+			var segment = [
 				generatedCodeColumn,
 				sourceIndex,
 				loc.line,
-				loc.column,
-				nameIndex ]);
+				loc.column
+			];
+			if ( nameIndex >= 0 ) {
+				segment.push( nameIndex );
+			}
+			rawSegments.push( segment );
 		} else if ( pending ) {
@@ -328,4 +374,3 @@ rawSegments.push( pending );
 					loc.line,
-					loc.column,
-					-1
+					loc.column
 				]);
@@ -353,4 +398,4 @@ }
 			loc.line,
-			loc.column,
-			-1 ];
+			loc.column
+		];
 	};
@@ -362,38 +407,16 @@
 		var lines = str.split( '\n' );
-		var lastLine = lines.pop();
 
-		if ( lines.length ) {
-			generatedCodeLine += lines.length;
-			this$1.raw[ generatedCodeLine ] = rawSegments = [];
-			generatedCodeColumn = lastLine.length;
-		} else {
-			generatedCodeColumn += lastLine.length;
+		if ( lines.length > 1 ) {
+			for ( var i = 0; i < lines.length - 1; i++ ) {
+				generatedCodeLine++;
+				this$1.raw[generatedCodeLine] = rawSegments = [];
+			}
+			generatedCodeColumn = 0;
 		}
+
+		generatedCodeColumn += lines[lines.length - 1].length;
 	};
 
 	this.encode = function () {
-		return this$1.raw.map( function (segments) {
-			var generatedCodeColumn = 0;
-
-			return segments.map( function (segment) {
-				var arr = [
-					segment[0] - generatedCodeColumn,
-					segment[1] - offsets.sourceIndex,
-					segment[2] - offsets.sourceCodeLine,
-					segment[3] - offsets.sourceCodeColumn
-				];
-
-				generatedCodeColumn = segment[0];
-				offsets.sourceIndex = segment[1];
-				offsets.sourceCodeLine = segment[2];
-				offsets.sourceCodeColumn = segment[3];
-
-				if ( ~segment[4] ) {
-					arr.push( segment[4] - offsets.sourceCodeName );
-					offsets.sourceCodeName = segment[4];
-				}
-
-				return encode( arr );
-			}).join( ',' );
-		}).join( ';' );
+		return encode(this$1.raw);
 	};
@@ -400,0 +423,0 @@ }

dist/magic-string.umd.js

@@ -285,48 +285,52 @@ (function (global, factory) {
 
-var charToInteger = {};
-var integerToChar = {};
-
-'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='.split( '' ).forEach( function ( char, i ) {
-	charToInteger[ char ] = i;
-	integerToChar[ i ] = char;
-});
-
-
-
-function encode ( value ) {
-	var result;
-
-	if ( typeof value === 'number' ) {
-		result = encodeInteger( value );
-	} else {
-		result = '';
-		for ( var i = 0; i < value.length; i += 1 ) {
-			result += encodeInteger( value[i] );
-		}
-	}
-
-	return result;
+var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
+function encode(decoded) {
+    var sourceFileIndex = 0; // second field
+    var sourceCodeLine = 0; // third field
+    var sourceCodeColumn = 0; // fourth field
+    var nameIndex = 0; // fifth field
+    var mappings = '';
+    for (var i = 0; i < decoded.length; i++) {
+        var line = decoded[i];
+        if (i > 0)
+            mappings += ';';
+        if (line.length === 0)
+            continue;
+        var generatedCodeColumn = 0; // first field
+        var lineMappings = [];
+        for (var _i = 0, line_1 = line; _i < line_1.length; _i++) {
+            var segment = line_1[_i];
+            var segmentMappings = encodeInteger(segment[0] - generatedCodeColumn);
+            generatedCodeColumn = segment[0];
+            if (segment.length > 1) {
+                segmentMappings +=
+                    encodeInteger(segment[1] - sourceFileIndex) +
+                        encodeInteger(segment[2] - sourceCodeLine) +
+                        encodeInteger(segment[3] - sourceCodeColumn);
+                sourceFileIndex = segment[1];
+                sourceCodeLine = segment[2];
+                sourceCodeColumn = segment[3];
+            }
+            if (segment.length === 5) {
+                segmentMappings += encodeInteger(segment[4] - nameIndex);
+                nameIndex = segment[4];
+            }
+            lineMappings.push(segmentMappings);
+        }
+        mappings += lineMappings.join(',');
+    }
+    return mappings;
 }
-
-function encodeInteger ( num ) {
-	var result = '';
-
-	if ( num < 0 ) {
-		num = ( -num << 1 ) | 1;
-	} else {
-		num <<= 1;
-	}
-
-	do {
-		var clamped = num & 31;
-		num >>= 5;
-
-		if ( num > 0 ) {
-			clamped |= 32;
-		}
-
-		result += integerToChar[ clamped ];
-	} while ( num > 0 );
-
-	return result;
+function encodeInteger(num) {
+    var result = '';
+    num = num < 0 ? (-num << 1) | 1 : num << 1;
+    do {
+        var clamped = num & 31;
+        num >>= 5;
+        if (num > 0) {
+            clamped |= 32;
+        }
+        result += chars[clamped];
+    } while (num > 0);
+    return result;
 }
@@ -337,10 +341,2 @@
 
-	var offsets = {
-		generatedCodeColumn: 0,
-		sourceIndex: 0,
-		sourceCodeLine: 0,
-		sourceCodeColumn: 0,
-		sourceCodeName: 0
-	};
-
 	var generatedCodeLine = 0;
@@ -356,8 +352,12 @@ var generatedCodeColumn = 0;
 		if ( content.length ) {
-			rawSegments.push([
+			var segment = [
 				generatedCodeColumn,
 				sourceIndex,
 				loc.line,
-				loc.column,
-				nameIndex ]);
+				loc.column
+			];
+			if ( nameIndex >= 0 ) {
+				segment.push( nameIndex );
+			}
+			rawSegments.push( segment );
 		} else if ( pending ) {
@@ -381,4 +381,3 @@ rawSegments.push( pending );
 					loc.line,
-					loc.column,
-					-1
+					loc.column
 				]);
@@ -406,4 +405,4 @@ }
 			loc.line,
-			loc.column,
-			-1 ];
+			loc.column
+		];
 	};
@@ -415,38 +414,16 @@
 		var lines = str.split( '\n' );
-		var lastLine = lines.pop();
 
-		if ( lines.length ) {
-			generatedCodeLine += lines.length;
-			this$1.raw[ generatedCodeLine ] = rawSegments = [];
-			generatedCodeColumn = lastLine.length;
-		} else {
-			generatedCodeColumn += lastLine.length;
+		if ( lines.length > 1 ) {
+			for ( var i = 0; i < lines.length - 1; i++ ) {
+				generatedCodeLine++;
+				this$1.raw[generatedCodeLine] = rawSegments = [];
+			}
+			generatedCodeColumn = 0;
 		}
+
+		generatedCodeColumn += lines[lines.length - 1].length;
 	};
 
 	this.encode = function () {
-		return this$1.raw.map( function (segments) {
-			var generatedCodeColumn = 0;
-
-			return segments.map( function (segment) {
-				var arr = [
-					segment[0] - generatedCodeColumn,
-					segment[1] - offsets.sourceIndex,
-					segment[2] - offsets.sourceCodeLine,
-					segment[3] - offsets.sourceCodeColumn
-				];
-
-				generatedCodeColumn = segment[0];
-				offsets.sourceIndex = segment[1];
-				offsets.sourceCodeLine = segment[2];
-				offsets.sourceCodeColumn = segment[3];
-
-				if ( ~segment[4] ) {
-					arr.push( segment[4] - offsets.sourceCodeName );
-					offsets.sourceCodeName = segment[4];
-				}
-
-				return encode( arr );
-			}).join( ',' );
-		}).join( ';' );
+		return encode(this$1.raw);
 	};
@@ -453,0 +430,0 @@ }

package.json

@@ -5,3 +5,3 @@ {
   "author": "Rich Harris",
-  "version": "0.22.5",
+  "version": "0.23.0",
   "repository": "https://github.com/rich-harris/magic-string",
@@ -14,3 +14,3 @@ "main": "dist/magic-string.cjs.js",
   "dependencies": {
-    "vlq": "^0.2.2"
+    "sourcemap-codec": "^1.4.1"
   },
@@ -17,0 +17,0 @@ "devDependencies": {

Fixed alerts

New author

Supply chain risk

A new npm collaborator published a version of the package for the first time. New collaborators are usually benign additions to a project, but do indicate a change to the security surface area of a package.

Found 1 instance in 1 package

URL strings

Supply chain risk

Package contains fragments of external URLs or IP addresses, which the package may be accessing at runtime.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

361677

4.1%

Lines of code

3086

1.55%

Number of low supply chain risk alerts

1

-50%

Number of medium supply chain risk alerts

0

-100%

Dependency changes

• + Added

  sourcemap-codec@^1.4.1

• + Added

  sourcemap-codec@1.4.8
  (transitive)

• - Removed

  vlq@^0.2.2

• - Removed

  vlq@0.2.3
  (transitive)