Is there a command line flag to disable JavaScript source maps for Chrome?

Question

Edit: I opened a new issue with Chromium.

Our project uses TypeScript compiled to JavaScript. When debugging automated unit tests in Karma, I want to disable JavaScript source maps and stick to debugging the compiled code.

I know how to do this from the browser settings but the change expires when I close the browser, so I'm looking for a way to disable it programmatically.

Disable source maps in Chrome DevTools

Chrome accepts other flags from the command line (e.g. --no-sandbox). Is there a flag or similar means to disable source maps?

Based on the Chromium flags list peter.sh/experiments/chromium-command-line-switches it seems there isn't any flags to disable the JavaScript Source map files :( — ZedTuX
– ZedTuX, Commented Mar 16, 2018 at 9:47
Here is an open issue requesting exactly what we are looking for: bugs.chromium.org/p/chromium/issues/detail?id=534874 — ZedTuX
– ZedTuX, Commented Mar 16, 2018 at 9:52
The list of command line switches linked above contains a flag called --devtools-flags "Passes command line parameters to the DevTools front-end" Maybe this is used in combination with some other flag? — givanse
– givanse, Commented Feb 4, 2019 at 22:27
There is a workaround in the reported issue bugs.chromium.org/p/chromium/issues/detail?id=781648#c4 — lalo
– lalo, Commented Feb 12, 2019 at 17:39
For now, try disabling creation of source maps from your bundler? — Aravind Voggu
– Aravind Voggu, Commented Feb 12, 2019 at 19:48

mooga · Accepted Answer · 2019-03-18 18:57:16Z

1

on webpack.config.js

add devtool: false

exports.onCreateWebpackConfig = ({ actions, stage }) => {
  // If production JavaScript and CSS build
  if (stage === 'build-javascript') {
    // Turn off source maps
    actions.setWebpackConfig({
      devtool: false,
    })
  }
};

or

You can pass compiler options inside every loader query string

loadWhatEVer?sourceMap=false

answered Mar 18, 2019 at 18:57

mooga

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1 Comment

Grant Over a year ago

Ah. Nice idea in general: don't serve source maps when running the tests.

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