source-maps

Gulp + browserify + 6to5 + source maps

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Use this as your start point: var gulp = require(‘gulp’); var gutil = require(‘gulp-util’); var sourcemaps = require(‘gulp-sourcemaps’); var source = require(‘vinyl-source-stream’); var buffer = require(‘vinyl-buffer’); var browserify = require(‘browserify’); var to5ify = require(‘6to5ify’); var uglify = require(‘gulp-uglify’); gulp.task(‘default’, function() { browserify(‘./src/index.js’, { debug: true }) .transform(to5ify) .bundle() .on(‘error’, gutil.log.bind(gutil, ‘Browserify Error’)) .pipe(source(‘bundle.js’)) .pipe(buffer()) .pipe(sourcemaps.init({loadMaps: … Read more

Webpack Module Warning: Failed to parse source map from “data” URL

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If you’re experiencing this issue with react-scripts/cra version 5.0.0. You’ll need to add the following to your .env file NOTE: this is not a fix. You are suppressing the source map warnings, but it may get you from seeing those warnings since all other solutions have not worked. GENERATE_SOURCEMAP=false or you can update your script … Read more

Why am I suddenly getting “Could not read source map” in VSCode using Angular with NodeJS 17 and above?

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I actually had the same problem (using Angular 14 with NX). The debugger would work on node 16 but not on node 18. What made it work is adding the flag ‘–host=127.0.0.1’ to the start script in package.json. “start”: “ng serve –host=127.0.0.1” My launch json: “version”: “0.2.0”, “configurations”: [ { “name”: “Debug Frontend”, “type”: “pwa-chrome”, … Read more

How to generate sourcemaps in create react app?

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According to CRA documentation, source maps are generated by default in production mode. However, you can disable this behavior (generating source maps in production mode) by running GENERATE_SOURCEMAP=false ./node_modules/.bin/react-scripts build or if you want this behavior to be permanent, do one of the following solutions: Set GENERATE_SOURCEMAP=false in your .env file. Modify the scripts in … Read more

How to add sourcemap in React Native for Production?

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For source mapping here is the way I go about it: In my bundle command for my production build I tell it to generate a source map: iOS: react-native bundle –platform ios –entry-file index.ios.js –dev false –bundle-output ./ios/main.jsbundle –assets-dest ./ios –sourcemap-output ./sourcemap.js Android – I had to actually modify the android/app/react.gradle file to get source … Read more

When do browsers download sourcemaps?

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Source Maps are downloaded and attached to the browser when you open the developer tools. Until then the browser is not aware of the sourceMap. There is a code reference to the Chrome’s Dev tools https://chromium.googlesource.com/chromium/src/+/refs/tags/75.0.3770.67/third_party/blink/renderer/devtools/front_end/sdk/DebuggerModel.js this._sourceMapManager.setEnabled(Common.moduleSetting(‘jsSourceMapsEnabled’).get()); Short Gist of what happens in the above code is Once Devtools is attached the modal triggers and … Read more

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