When a browser loads a JavaScript file, it looks for a source map for that file. You can set this with anX-SourceMapheader, or more commonly, with a comment in the JavaScript file itself, like this: That comment can go anywhere in the file, but at the end is idiomatic. The URL can...
Fixed:Moves sourcemap to sit next to JavaScript package. v5.2.6 Fixed:addsDOMContentLoadedevent before looking fordata-whatpersistattribute on body. v5.2.5 Fixed:Hotfix for shaky support ofdatasetin IE10. v5.2.4 Added:Ability to adddata-whatpersist="false"attribute to theortag to disable usage...
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When your app is in production, and has an error, the sourcemap will help take your ugly file, and will allow you to see the original version of the code. If you didn’t have the sourcemap, then any error would seem cryptic at best. So, to answer you questions in order: What is ...
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"sourceMap": true, "module": "esnext", "moduleResolution": "node", "importHelpers": true, "target": "es2015", // target ES version "typeRoots": [ "node_modules/@types" ], "lib": [ "es2018", "dom" ] } } All those steps can be composed into a single command usingnpmoryarn...
If you care about being able to debug production code easier, then yes, you should do it. How does it get created? It is created at build time. There are build tools that can build your .map file for you as it does other files. https://github.com/gruntjs/grunt-contrib-uglify/issues...
"karma-sourcemap-loader": "^0.3.7", "karma-spec-reporter": "0.0.24", "karma-webpack": "^1.7.0", "lolex": "^1.4.0", "mocha": "^2.4.5", "chai": "^3.5.0", "sinon": "^1.17.3", "sinon-chai": "^2.8.0", "inject-loader": "^2.0.1", "isparta-loader": "^2.0.0"...
import commonjs from 'rollup-plugin-commonjs' import nodeResolve from 'rollup-plugin-node-resolve' export default { entry: 'index.js', format: 'iife', plugins: [ nodeResolve({ jsnext: true, main: true, preferBuiltins: false }), commonjs({ sourceMap: false, ignoreGlobal: true }) ],...
"sourceMap": true, "namedChunks": true } }, ... } While the development configuration is full of settings, the production one is left kind of empty, which just means it uses the default values. That might be good so, but let’s still have a look at what the options are. ...