readModifiedFile() — vite Function Reference

Architecture documentation for the readModifiedFile() function in hmr.ts from the vite codebase.

Function typescript ViteCore ConfigEngine calls 1 called by 1

Entity Profile

ViteCore→ ConfigEngine→ readModifiedFile() — vite Function Reference

Dependency Diagram

graph TD
  6740d01d_d16c_18d3_8598_2b7709d0ddb6["readModifiedFile()"]
  18db4f26_79f1_5b7d_b291_4feeaf95538f["hmr.ts"]
  6740d01d_d16c_18d3_8598_2b7709d0ddb6 -->|defined in| 18db4f26_79f1_5b7d_b291_4feeaf95538f
  8f73b680_d5b9_383c_f695_c906b80fb1e6["handleHMRUpdate()"]
  8f73b680_d5b9_383c_f695_c906b80fb1e6 -->|calls| 6740d01d_d16c_18d3_8598_2b7709d0ddb6
  b2371a4f_659b_44c9_12ca_5d876a06b334["Promise()"]
  6740d01d_d16c_18d3_8598_2b7709d0ddb6 -->|calls| b2371a4f_659b_44c9_12ca_5d876a06b334
  style 6740d01d_d16c_18d3_8598_2b7709d0ddb6 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/vite/src/node/server/hmr.ts lines 1093–1110

async function readModifiedFile(file: string): Promise<string> {
  const content = await fsp.readFile(file, 'utf-8')
  if (!content) {
    const mtime = (await fsp.stat(file)).mtimeMs

    for (let n = 0; n < 10; n++) {
      await new Promise((r) => setTimeout(r, 10))
      const newMtime = (await fsp.stat(file)).mtimeMs
      if (newMtime !== mtime) {
        break
      }
    }

    return await fsp.readFile(file, 'utf-8')
  } else {
    return content
  }
}