mergeDefaults() — vue Function Reference

Architecture documentation for the mergeDefaults() function in apiSetup.ts from the vue codebase.

Function typescript VueCore Observer calls 1

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VueCore→ Observer→ mergeDefaults() — vue Function Reference

Dependency Diagram

graph TD
  f45c9edf_f082_e0c5_3459_7f13417f9e10["mergeDefaults()"]
  3a7c7919_1905_22a7_f604_9084d5e5d0df["apiSetup.ts"]
  f45c9edf_f082_e0c5_3459_7f13417f9e10 -->|defined in| 3a7c7919_1905_22a7_f604_9084d5e5d0df
  82a7440d_c9f9_b86f_d255_d7b035940ca2["isFunction()"]
  f45c9edf_f082_e0c5_3459_7f13417f9e10 -->|calls| 82a7440d_c9f9_b86f_d255_d7b035940ca2
  style f45c9edf_f082_e0c5_3459_7f13417f9e10 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

src/v3/apiSetup.ts lines 221–246

export function mergeDefaults(
  raw: string[] | Record<string, PropOptions>,
  defaults: Record<string, any>
): Record<string, PropOptions> {
  const props = isArray(raw)
    ? raw.reduce(
        (normalized, p) => ((normalized[p] = {}), normalized),
        {} as Record<string, PropOptions>
      )
    : raw
  for (const key in defaults) {
    const opt = props[key]
    if (opt) {
      if (isArray(opt) || isFunction(opt)) {
        props[key] = { type: opt, default: defaults[key] }
      } else {
        opt.default = defaults[key]
      }
    } else if (opt === null) {
      props[key] = { default: defaults[key] }
    } else if (__DEV__) {
      warn(`props default key "${key}" has no corresponding declaration.`)
    }
  }
  return props
}