parseWorkerOptions() — vite Function Reference

Architecture documentation for the parseWorkerOptions() function in workerImportMetaUrl.ts from the vite codebase.

Function typescript PluginSystem LegacySupport calls 2 called by 1

Entity Profile

PluginSystem→ LegacySupport→ parseWorkerOptions() — vite Function Reference

Dependency Diagram

graph TD
  2bc39ad0_e74f_e4f8_2016_48276895bfca["parseWorkerOptions()"]
  f241296c_aba8_08ac_c4f9_aed85a9eb247["workerImportMetaUrl.ts"]
  2bc39ad0_e74f_e4f8_2016_48276895bfca -->|defined in| f241296c_aba8_08ac_c4f9_aed85a9eb247
  fcb9c288_b3dc_c5f2_7476_d243d97d0e75["getWorkerType()"]
  fcb9c288_b3dc_c5f2_7476_d243d97d0e75 -->|calls| 2bc39ad0_e74f_e4f8_2016_48276895bfca
  1c99a215_ac45_d0f0_ba6d_8a18ab03dcc7["extractWorkerTypeFromAst()"]
  2bc39ad0_e74f_e4f8_2016_48276895bfca -->|calls| 1c99a215_ac45_d0f0_ba6d_8a18ab03dcc7
  f23f9ad3_5ac1_6998_4142_106a985db0b0["err()"]
  2bc39ad0_e74f_e4f8_2016_48276895bfca -->|calls| f23f9ad3_5ac1_6998_4142_106a985db0b0
  style 2bc39ad0_e74f_e4f8_2016_48276895bfca fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/vite/src/node/plugins/workerImportMetaUrl.ts lines 96–132

async function parseWorkerOptions(
  rawOpts: string,
  optsStartIndex: number,
): Promise<WorkerOptions> {
  let opts: WorkerOptions = {}
  try {
    opts = evalValue<WorkerOptions>(rawOpts)
  } catch {
    const optsNode = (
      (await parseAstAsync(`(${rawOpts})`)).body[0] as ExpressionStatement
    ).expression

    const type = extractWorkerTypeFromAst(optsNode, optsStartIndex)
    if (type) {
      return { type }
    }

    throw err(
      'Vite is unable to parse the worker options as the value is not static. ' +
        'To ignore this error, please use /* @vite-ignore */ in the worker options.',
      optsStartIndex,
    )
  }

  if (opts == null) {
    return {}
  }

  if (typeof opts !== 'object') {
    throw err(
      `Expected worker options to be an object, got ${typeof opts}`,
      optsStartIndex,
    )
  }

  return opts
}