isLegacyBundle() — vite Function Reference

Architecture documentation for the isLegacyBundle() function in index.ts from the vite codebase.

Function typescript PluginSystem LegacySupport called by 1

Entity Profile

PluginSystem→ LegacySupport→ isLegacyBundle() — vite Function Reference

Dependency Diagram

graph TD
  05be5ca5_2f63_2c99_c05a_ce1bdff8d1ab["isLegacyBundle()"]
  9776ecb6_00c0_b3b9_b3f7_177fedabeacc["index.ts"]
  05be5ca5_2f63_2c99_c05a_ce1bdff8d1ab -->|defined in| 9776ecb6_00c0_b3b9_b3f7_177fedabeacc
  cf21e8d8_cce6_30a7_7732_696ed5cdf103["viteLegacyPlugin()"]
  cf21e8d8_cce6_30a7_7732_696ed5cdf103 -->|calls| 05be5ca5_2f63_2c99_c05a_ce1bdff8d1ab
  style 05be5ca5_2f63_2c99_c05a_ce1bdff8d1ab fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/plugin-legacy/src/index.ts lines 982–988

function isLegacyBundle(bundle: Rollup.OutputBundle) {
  const entryChunk = Object.values(bundle).find(
    (output) => output.type === 'chunk' && output.isEntry,
  )

  return !!entryChunk && entryChunk.fileName.includes('-legacy')
}