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Sourcemaps Lookup Laravel Package

spatie/sourcemaps-lookup

Fast, memory-efficient Source Map v3 lookup for PHP. Resolve JavaScript stack frames to original source file, line/column, symbol name, and enclosing scope. Optimized for the read path and high-volume error symbolicating from uploaded sourcemaps.

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title: Supported source map features weight: 6

Supported

  • Source Map v3 "regular" maps (the default format produced by bundlers).
  • 1-field (unmapped), 4-field (mapped), and 5-field (mapped with name) segments.
  • sourceRoot prefixing.
  • null entries in the sources array (returned as sourceFileName === null).
  • Inlined sourcesContent.
  • ignoreList for third-party sources (exposed via isIgnored()).
  • Enclosing scope resolution via scopeAt(). Heuristic polyfill today, natively backed by the ECMA-426 Scopes proposal when bundlers begin emitting it.

Not supported (by design)

  • Writing, generating, merging, or transforming source maps.
  • Indexed and sectioned source maps (throws UnsupportedSourceMap. File an issue if you need this).
  • Source Map v4 or legacy v2.
  • External source fetching. Only inlined sourcesContent is read.
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