diff --git a/.pullapprove.yml b/.pullapprove.yml
index 91a503e2d56..09b06186a59 100644
--- a/.pullapprove.yml
+++ b/.pullapprove.yml
@@ -1132,7 +1132,6 @@ groups:
           'tools/rxjs/**',
           'tools/saucelabs/**',
           'tools/size-tracking/**',
-          'tools/source-map-test/**',
           'tools/symbol-extractor/**',
           'tools/testing/**',
           'tools/tslint/**',
diff --git a/gulpfile.js b/gulpfile.js
index 96c7d95b922..d44578dad04 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -18,5 +18,4 @@ function loadTask(fileName, taskName) {
 }
 
 
-gulp.task('source-map-test', loadTask('source-map-test'));
 gulp.task('changelog:zonejs', loadTask('changelog-zonejs'));
diff --git a/tools/gulp-tasks/source-map-test.js b/tools/gulp-tasks/source-map-test.js
deleted file mode 100644
index ff692b61e4a..00000000000
--- a/tools/gulp-tasks/source-map-test.js
+++ /dev/null
@@ -1,31 +0,0 @@
-/**
- * @license
- * Copyright Google LLC All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
-
-const fs = require('fs');
-const path = require('path');
-const sourceMapTest = require('../source-map-test');
-
-const excludedPackages = ['bazel', 'benchpress', 'compiler-cli', 'language-service'];
-
-module.exports = (gulp) => () => {
-  const packageDir = path.resolve(process.cwd(), 'dist/packages-dist/');
-  const packages =
-      fs.readdirSync(packageDir).filter(package => excludedPackages.indexOf(package) === -1);
-
-  packages.forEach(package => {
-    if (sourceMapTest(package).length) {
-      process.exit(1);
-    }
-  });
-
-  if (!packages.length) {
-    // tslint:disable-next-line:no-console
-    console.log('No packages found in packages-dist. Unable to run source map test.');
-    process.exit(1);
-  }
-};
diff --git a/tools/source-map-test/index.js b/tools/source-map-test/index.js
deleted file mode 100644
index e76465c4fe9..00000000000
--- a/tools/source-map-test/index.js
+++ /dev/null
@@ -1,82 +0,0 @@
-#!/usr/bin/env node
-
-/**
- * @license
- * Copyright Google LLC All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
-
-const path = require('path');
-const getMappings = require('./parseMap');
-
-const CLOSURE_REGEX = /tsickle_Closure_declarations\(\)/g;
-const VAR_REGEX = /(export )?(var (\S+) =)/g;
-const FUNCTION_REGEX = /(export )?function (\S+)\((.*)\) {/g;
-const CLASS_REGEX = /var (\S+) = \(function \((\S*)\) {/g;
-const PROPERTY_REGEX = /Object.defineProperty\((\S+)\.prototype, "(\S+)", {/g;
-const METHOD_REGEX = /(\S+)\.prototype\.(\S+) = function \((\S*)\) {/g;
-const GETTER_REGEX = /get_REGEX = function \((\S*)\) {/g;
-const TYPE_COMMENT_REGEX = /\/\*\* @type {\?} \*\/ /g;
-const AFTER_EQUALS_REGEX = /([^=]+)=(.*)/g;
-const EXPORT_REGEX = /export /g;
-const TSLIB_REGEX = /tslib_\d\.__/g;
-const STRIP_PREFIX_REGEX = /ɵ/g;
-const STRIP_SUFFIX_REGEX = /([^$]+)(\$)+\d/g;
-const SYNTHETIC_REGEX = /ɵ[0-9]/;
-
-// tslint:disable:no-console
-module.exports = function sourceMapTest(package) {
-  const mappings =
-      getMappings(getBundlePath(package)).filter(mapping => shouldCheckMapping(mapping.sourceText));
-
-  console.log(`Analyzing ${mappings.length} mappings for ${package}...`);
-
-  const failures = mappings.filter(mapping => {
-    if (SYNTHETIC_REGEX.test(mapping.sourceText)) return false;
-    if (cleanSource(mapping.sourceText) !== cleanGen(mapping.genText)) {
-      console.log('source:', cleanSource(mapping.sourceText), 'gen:', cleanGen(mapping.genText));
-    }
-    return cleanSource(mapping.sourceText) !== cleanGen(mapping.genText);
-  });
-
-  logResults(failures);
-  return failures;
-};
-
-function shouldCheckMapping(text) {
-  // tsickle closure declaration does not exist in final bundle, so can't be checked
-  if (CLOSURE_REGEX.test(text)) return false;
-  return VAR_REGEX.test(text) || FUNCTION_REGEX.test(text) || CLASS_REGEX.test(text) ||
-      PROPERTY_REGEX.test(text) || METHOD_REGEX.test(text) || GETTER_REGEX.test(text);
-}
-
-function cleanSource(source) {
-  return source.replace(TYPE_COMMENT_REGEX, '')
-      .replace(EXPORT_REGEX, '')
-      .replace(STRIP_PREFIX_REGEX, '')
-      .replace(TSLIB_REGEX, '__')
-      .replace(AFTER_EQUALS_REGEX, '$1=');
-}
-
-function cleanGen(gen) {
-  return gen.replace(TYPE_COMMENT_REGEX, '')
-      .replace(STRIP_PREFIX_REGEX, '')
-      .replace(STRIP_SUFFIX_REGEX, '$1')
-      .replace(AFTER_EQUALS_REGEX, '$1=');
-}
-
-// tslint:disable:no-console
-function logResults(failures) {
-  if (failures.length) {
-    console.error(`... and source maps appear to be broken: ${failures.length} failures.`);
-    failures.forEach(failure => console.error(failure));
-  } else {
-    console.log('... and source maps look good! 100% match');
-  }
-}
-
-function getBundlePath(package) {
-  return path.resolve(process.cwd(), 'dist/packages-dist/', package, 'esm5/', package + '.js');
-}
diff --git a/tools/source-map-test/parseMap.js b/tools/source-map-test/parseMap.js
deleted file mode 100644
index 2d323d50f12..00000000000
--- a/tools/source-map-test/parseMap.js
+++ /dev/null
@@ -1,67 +0,0 @@
-#!/usr/bin/env node
-
-/**
- * @license
- * Copyright Google LLC All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
-
-const vlq = require('vlq');
-const fs = require('fs');
-const path = require('path');
-
-module.exports = function getMappings(bundlePath) {
-  const sourceMap = JSON.parse(getFile(`${bundlePath}.map`));
-  const sourcesContent = sourceMap.sourcesContent.map(file => file.split('\n'));
-  const bundleLines = getFile(bundlePath).split('\n');
-
-  let sourceLines = sourcesContent[0];
-  let sourceFileIndex = 0;
-  let sourceLineIndex = 0;
-  let sourceColIndex = 0;
-
-  return decodeLines(sourceMap).reduce((matchData, mapLine, genLineIndex) => {
-    mapLine.forEach((segment, index) => {
-      if (segment.length) {
-        const [genColDiff, sourceFileDiff, sourceLineDiff, sourceColDiff] = segment;
-
-        // if source file changes, grab new file from sourcesContent
-        if (sourceFileDiff !== 0) {
-          sourceFileIndex += sourceFileDiff;
-          sourceLines = sourcesContent[sourceFileIndex];
-        }
-
-        const genText = bundleLines[genLineIndex].trim();
-        const sourceText = sourceLines[sourceLineIndex + sourceLineDiff].trim();
-
-        // only record mappings that are long enough to be meaningful
-        if (index === 0 && genText.length > 15 && sourceText.length > 15) {
-          matchData.push({
-            genLineIndex,
-            sourceLineIndex,
-            sourceFile: sourceMap.sources[sourceFileIndex],
-            genText,
-            sourceText
-          });
-        }
-
-        sourceLineIndex += sourceLineDiff;
-        sourceColIndex += sourceColDiff;
-      }
-    });
-
-    return matchData;
-  }, []);
-};
-
-function getFile(filePath) {
-  return fs.readFileSync(path.resolve(process.cwd(), filePath), 'utf-8');
-}
-
-function decodeLines(sourceMap) {
-  return sourceMap.mappings.split(';').map(line => {
-    return line.split(',').map(seg => vlq.decode(seg));
-  });
-}