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I'm encountering a strange issue when switching my Angular build system from Webpack to ESBuild.

When using:

"builder": "@angular-devkit/build-angular:browser"

Everything works fine, and RAM usage stays below 1GB.

However, when switching to:

"builder": "@angular-devkit/build-angular:browser-esbuild"

The RAM usage skyrockets to over 16GB, causing performance issues.

I narrowed it down to script optimization. If I disable it:

"optimization": {
  "scripts": false,
  "styles": true
}

The RAM usage remains under 1GB, but as soon as script optimization is enabled, the memory spikes again.

Additional Details:

  • Webpack (browser) does not generate any warnings or errors.
  • ESBuild (browser-esbuild) completes without errors, but with extreme RAM usage.
  • The issue is only triggered when script optimization is enabled.
  • I'm using the latest Angular version with ESBuild.

Has anyone experienced a similar issue, or does anyone know how to mitigate this high memory usage with ESBuild optimization?

P.S. Maybe it's related issue but not sure: Memory usage grows exponentially of the esbuild process. Any suggestion appreciated!

本文标签： webpackHigh RAM Usage in Angular Build with BrowserESBuild Script OptimizationStack Overflow

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