perf: replace source-map package with @jridgewell/trace-mapping

README.md

@@ -220,7 +220,7 @@ type minify = (
   input: {
     [file: string]: string;
   },
-  sourceMap: import("source-map").RawSourceMap | undefined,
+  sourceMap: import("@jridgewell/trace-mapping").SourceMapInput | undefined,
   minifyOptions: {
     module?: boolean | undefined;
     ecma?: import("terser").ECMA | undefined;
@@ -267,7 +267,7 @@ type minify = (
     | undefined
 ) => Promise<{
   code: string;
-  map?: import("source-map").RawSourceMap | undefined;
+  map?: import("@jridgewell/trace-mapping").SourceMapInput | undefined;
   errors?: (string | Error)[] | undefined;
   warnings?: (string | Error)[] | undefined;
   extractedComments?: string[] | undefined;

package.json

@@ -55,10 +55,10 @@
     }
   },
   "dependencies": {
+    "@jridgewell/trace-mapping": "^0.3.7",
     "jest-worker": "^27.4.5",
     "schema-utils": "^3.1.1",
     "serialize-javascript": "^6.0.0",
-    "source-map": "^0.6.1",
     "terser": "^5.7.2"
   },
   "devDependencies": {

src/index.js

@@ -1,7 +1,7 @@
 const path = require("path");
 const os = require("os");
 
-const { SourceMapConsumer } = require("source-map");
+const { TraceMap, originalPositionFor } = require("@jridgewell/trace-mapping");
 const { validate } = require("schema-utils");
 const serialize = require("serialize-javascript");
 const { Worker } = require("jest-worker");
@@ -25,7 +25,7 @@ const { minify } = require("./minify");
 /** @typedef {import("./utils.js").TerserECMA} TerserECMA */
 /** @typedef {import("./utils.js").TerserOptions} TerserOptions */
 /** @typedef {import("jest-worker").Worker} JestWorker */
-/** @typedef {import("source-map").RawSourceMap} RawSourceMap */
+/** @typedef {import("@jridgewell/trace-mapping").SourceMapInput} SourceMapInput */
 
 /** @typedef {RegExp | string} Rule */
 
@@ -64,7 +64,7 @@ const { minify } = require("./minify");
 /**
  * @typedef {Object} MinimizedResult
  * @property {string} code
- * @property {RawSourceMap} [map]
+ * @property {SourceMapInput} [map]
  * @property {Array<Error | string>} [errors]
  * @property {Array<Error | string>} [warnings]
  * @property {Array<string>} [extractedComments]
@@ -98,7 +98,7 @@ const { minify } = require("./minify");
  * @template T
  * @callback BasicMinimizerImplementation
  * @param {Input} input
- * @param {RawSourceMap | undefined} sourceMap
+ * @param {SourceMapInput | undefined} sourceMap
  * @param {MinimizerOptions<T>} minifyOptions
  * @param {ExtractCommentsOptions | undefined} extractComments
  * @returns {Promise<MinimizedResult>}
@@ -119,7 +119,7 @@ const { minify } = require("./minify");
  * @typedef {Object} InternalOptions
  * @property {string} name
  * @property {string} input
- * @property {RawSourceMap | undefined} inputSourceMap
+ * @property {SourceMapInput | undefined} inputSourceMap
  * @property {ExtractCommentsOptions | undefined} extractComments
  * @property {{ implementation: MinimizerImplementation<T>, options: MinimizerOptions<T> }} minimizer
  */
@@ -199,8 +199,8 @@ class TerserPlugin {
    * @returns {boolean}
    */
   static isSourceMap(input) {
-    // All required options for `new SourceMapConsumer(...options)`
-    // https://github.com/mozilla/source-map#new-sourcemapconsumerrawsourcemap
+    // All required options for `new TraceMap(...options)`
+    // https://github.com/jridgewell/trace-mapping#usage
     return Boolean(
       input &&
         input.version &&
@@ -234,7 +234,7 @@ class TerserPlugin {
    * @private
    * @param {any} error
    * @param {string} file
-   * @param {SourceMapConsumer} [sourceMap]
+   * @param {TraceMap} [sourceMap]
    * @param {Compilation["requestShortener"]} [requestShortener]
    * @returns {Error}
    */
@@ -254,7 +254,7 @@ class TerserPlugin {
     if (error.line) {
       const original =
         sourceMap &&
-        sourceMap.originalPositionFor({
+        originalPositionFor(sourceMap, {
           line: error.line,
           column: error.col,
         });
@@ -438,7 +438,7 @@ class TerserPlugin {
 
         if (!output) {
           let input;
-          /** @type {RawSourceMap | undefined} */
+          /** @type {SourceMapInput | undefined} */
           let inputSourceMap;
 
           const { source: sourceFromInputSource, map } =
@@ -453,7 +453,7 @@ class TerserPlugin {
                 (new Error(`${name} contains invalid source map`))
               );
             } else {
-              inputSourceMap = /** @type {RawSourceMap} */ (map);
+              inputSourceMap = /** @type {SourceMapInput} */ (map);
             }
           }
 
@@ -507,8 +507,8 @@ class TerserPlugin {
                   error,
                   name,
                   hasSourceMap
-                    ? new SourceMapConsumer(
-                        /** @type {RawSourceMap} */ (inputSourceMap)
+                    ? new TraceMap(
+                        /** @type {SourceMapInput} */ (inputSourceMap)
                       )
                     : // eslint-disable-next-line no-undefined
                       undefined,
@@ -556,8 +556,8 @@ class TerserPlugin {
                   item,
                   name,
                   hasSourceMap
-                    ? new SourceMapConsumer(
-                        /** @type {RawSourceMap} */ (inputSourceMap)
+                    ? new TraceMap(
+                        /** @type {SourceMapInput} */ (inputSourceMap)
                       )
                     : // eslint-disable-next-line no-undefined
                       undefined,
@@ -588,7 +588,7 @@ class TerserPlugin {
               name,
               output.map,
               input,
-              /** @type {RawSourceMap} */ (inputSourceMap),
+              /** @type {SourceMapInput} */ (inputSourceMap),
               true
             );
           } else {

src/utils.js

@@ -1,4 +1,4 @@
-/** @typedef {import("source-map").RawSourceMap} RawSourceMap */
+/** @typedef {import("@jridgewell/trace-mapping").SourceMapInput} SourceMapInput */
 /** @typedef {import("terser").FormatOptions} TerserFormatOptions */
 /** @typedef {import("terser").MinifyOptions} TerserOptions */
 /** @typedef {import("terser").ECMA} TerserECMA */
@@ -80,7 +80,7 @@ function throttleAll(limit, tasks) {
 /* istanbul ignore next */
 /**
  * @param {Input} input
- * @param {RawSourceMap | undefined} sourceMap
+ * @param {SourceMapInput | undefined} sourceMap
  * @param {PredefinedOptions & CustomOptions} minimizerOptions
  * @param {ExtractCommentsOptions | undefined} extractComments
  * @return {Promise<MinimizedResult>}
@@ -287,7 +287,7 @@ async function terserMinify(
     code: /** @type {string} **/ (result.code),
     // @ts-ignore
     // eslint-disable-next-line no-undefined
-    map: result.map ? /** @type {RawSourceMap} **/ (result.map) : undefined,
+    map: result.map ? /** @type {SourceMapInput} **/ (result.map) : undefined,
     extractedComments,
   };
 }
@@ -311,7 +311,7 @@ terserMinify.getMinimizerVersion = () => {
 /* istanbul ignore next */
 /**
  * @param {Input} input
- * @param {RawSourceMap | undefined} sourceMap
+ * @param {SourceMapInput | undefined} sourceMap
  * @param {PredefinedOptions & CustomOptions} minimizerOptions
  * @param {ExtractCommentsOptions | undefined} extractComments
  * @return {Promise<MinimizedResult>}
@@ -529,7 +529,7 @@ uglifyJsMinify.getMinimizerVersion = () => {
 /* istanbul ignore next */
 /**
  * @param {Input} input
- * @param {RawSourceMap | undefined} sourceMap
+ * @param {SourceMapInput | undefined} sourceMap
  * @param {PredefinedOptions & CustomOptions} minimizerOptions
  * @return {Promise<MinimizedResult>}
  */
@@ -613,7 +613,7 @@ swcMinify.getMinimizerVersion = () => {
 /* istanbul ignore next */
 /**
  * @param {Input} input
- * @param {RawSourceMap | undefined} sourceMap
+ * @param {SourceMapInput | undefined} sourceMap
  * @param {PredefinedOptions & CustomOptions} minimizerOptions
  * @return {Promise<MinimizedResult>}
  */

test/TerserPlugin.test.js

@@ -2,7 +2,7 @@ import crypto from "crypto";
 
 import path from "path";
 
-import { SourceMapConsumer } from "source-map";
+import { TraceMap } from "@jridgewell/trace-mapping";
 import CopyWebpackPlugin from "copy-webpack-plugin";
 import RequestShortener from "webpack/lib/RequestShortener";
 import { javascript, SourceMapDevToolPlugin, util } from "webpack";
@@ -551,7 +551,7 @@ describe("TerserPlugin", () => {
       TerserPlugin.buildError(
         errorWithLineAndCol,
         "test.js",
-        new SourceMapConsumer(rawSourceMap),
+        new TraceMap(rawSourceMap),
         // eslint-disable-next-line no-undefined
         undefined
       )
@@ -567,7 +567,7 @@ describe("TerserPlugin", () => {
       TerserPlugin.buildError(
         otherErrorWithLineAndCol,
         "test.js",
-        new SourceMapConsumer(rawSourceMap),
+        new TraceMap(rawSourceMap),
         new RequestShortener("/example.com/www/js/")
       )
     ).toMatchSnapshot();

types/index.d.ts

@@ -7,7 +7,7 @@ export = TerserPlugin;
 /** @typedef {import("./utils.js").TerserECMA} TerserECMA */
 /** @typedef {import("./utils.js").TerserOptions} TerserOptions */
 /** @typedef {import("jest-worker").Worker} JestWorker */
-/** @typedef {import("source-map").RawSourceMap} RawSourceMap */
+/** @typedef {import("@jridgewell/trace-mapping").SourceMapInput} SourceMapInput */
 /** @typedef {RegExp | string} Rule */
 /** @typedef {Rule[] | Rule} Rules */
 /**
@@ -37,7 +37,7 @@ export = TerserPlugin;
 /**
  * @typedef {Object} MinimizedResult
  * @property {string} code
- * @property {RawSourceMap} [map]
+ * @property {SourceMapInput} [map]
  * @property {Array<Error | string>} [errors]
  * @property {Array<Error | string>} [warnings]
  * @property {Array<string>} [extractedComments]
@@ -65,7 +65,7 @@ export = TerserPlugin;
  * @template T
  * @callback BasicMinimizerImplementation
  * @param {Input} input
- * @param {RawSourceMap | undefined} sourceMap
+ * @param {SourceMapInput | undefined} sourceMap
  * @param {MinimizerOptions<T>} minifyOptions
  * @param {ExtractCommentsOptions | undefined} extractComments
  * @returns {Promise<MinimizedResult>}
@@ -83,7 +83,7 @@ export = TerserPlugin;
  * @typedef {Object} InternalOptions
  * @property {string} name
  * @property {string} input
- * @property {RawSourceMap | undefined} inputSourceMap
+ * @property {SourceMapInput | undefined} inputSourceMap
  * @property {ExtractCommentsOptions | undefined} extractComments
  * @property {{ implementation: MinimizerImplementation<T>, options: MinimizerOptions<T> }} minimizer
  */
@@ -131,7 +131,7 @@ declare class TerserPlugin<T = import("terser").MinifyOptions> {
    * @private
    * @param {any} error
    * @param {string} file
-   * @param {SourceMapConsumer} [sourceMap]
+   * @param {TraceMap} [sourceMap]
    * @param {Compilation["requestShortener"]} [requestShortener]
    * @returns {Error}
    */
@@ -190,7 +190,7 @@ declare namespace TerserPlugin {
     TerserECMA,
     TerserOptions,
     JestWorker,
-    RawSourceMap,
+    SourceMapInput,
     Rule,
     Rules,
     ExtractCommentsFunction,
@@ -244,7 +244,7 @@ type Asset = import("webpack").Asset;
 type TerserECMA = import("./utils.js").TerserECMA;
 type TerserOptions = import("./utils.js").TerserOptions;
 type JestWorker = import("jest-worker").Worker;
-type RawSourceMap = import("source-map").RawSourceMap;
+type SourceMapInput = import("@jridgewell/trace-mapping").SourceMapInput;
 type Rule = RegExp | string;
 type Rules = Rule[] | Rule;
 type ExtractCommentsFunction = (
@@ -276,7 +276,7 @@ type ExtractCommentsObject = {
 type ExtractCommentsOptions = ExtractCommentsCondition | ExtractCommentsObject;
 type MinimizedResult = {
   code: string;
-  map?: import("source-map").RawSourceMap | undefined;
+  map?: import("@jridgewell/trace-mapping").SourceMapInput | undefined;
   errors?: (string | Error)[] | undefined;
   warnings?: (string | Error)[] | undefined;
   extractedComments?: string[] | undefined;
@@ -295,7 +295,7 @@ type PredefinedOptions = {
 type MinimizerOptions<T> = PredefinedOptions & InferDefaultType<T>;
 type BasicMinimizerImplementation<T> = (
   input: Input,
-  sourceMap: RawSourceMap | undefined,
+  sourceMap: SourceMapInput | undefined,
   minifyOptions: MinimizerOptions<T>,
   extractComments: ExtractCommentsOptions | undefined
 ) => Promise<MinimizedResult>;
@@ -307,7 +307,7 @@ type MinimizerImplementation<T> = BasicMinimizerImplementation<T> &
 type InternalOptions<T> = {
   name: string;
   input: string;
-  inputSourceMap: RawSourceMap | undefined;
+  inputSourceMap: SourceMapInput | undefined;
   extractComments: ExtractCommentsOptions | undefined;
   minimizer: {
     implementation: MinimizerImplementation<T>;