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Add DISABLE_CLEAR_CONSOLE feature #13044

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Add DISABLE_CLEAR_CONSOLE feature #13044

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1 change: 1 addition & 0 deletions docusaurus/docs/advanced-configuration.md
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Original file line number Diff line number Diff line change
Expand Up @@ -30,3 +30,4 @@ You can adjust various development and production settings by setting environmen
| ESLINT_NO_DEV_ERRORS | ✅ Used | 🚫 Ignored | When set to `true`, ESLint errors are converted to warnings during development. As a result, ESLint output will no longer appear in the error overlay. |
| DISABLE_ESLINT_PLUGIN | ✅ Used | ✅ Used | When set to `true`, [eslint-webpack-plugin](https://github.com/webpack-contrib/eslint-webpack-plugin) will be completely disabled. |
| DISABLE_NEW_JSX_TRANSFORM | ✅ Used | ✅ Used | When set to `true`, disables the [new JSX transform](https://reactjs.org/blog/2020/09/22/introducing-the-new-jsx-transform.html) introduced in React 17 and backported to React 16.14.0, 15.7.0, and 0.14.10. New projects will use a version of React that supports this by default but you may need to disable it in existing projects if you can't upgrade React. |
| DISABLE_CLEAR_CONSOLE | ✅ Used | 🚫 Ignored | When set to `true`, disables the automatic `clearConsole` using `start` script and used by the `WebpackDevServerUtils.js`. |
7 changes: 7 additions & 0 deletions packages/react-dev-utils/clearConsole.js
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Expand Up @@ -8,6 +8,13 @@
'use strict';

function clearConsole() {
if (
process.env.NODE_ENV === 'development' &&
process.env.DISABLE_CLEAR_CONSOLE === 'true'
) {
return false;
}

process.stdout.write(
process.platform === 'win32' ? '\x1B[2J\x1B[0f' : '\x1B[2J\x1B[3J\x1B[H'
);
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