getHookArgumentsLength() — vue Function Reference

Architecture documentation for the getHookArgumentsLength() function in transition.ts from the vue codebase.

Function typescript WebPlatform WebRuntime called by 2

Entity Profile

WebPlatform→ WebRuntime→ getHookArgumentsLength() — vue Function Reference

Dependency Diagram

graph TD
  e81fb0ad_1039_a8c5_0f85_067da2e9a50c["getHookArgumentsLength()"]
  4d46ad51_46f5_2e09_4e74_85f233ccffed["transition.ts"]
  e81fb0ad_1039_a8c5_0f85_067da2e9a50c -->|defined in| 4d46ad51_46f5_2e09_4e74_85f233ccffed
  aff958ec_f8bd_7b1b_435a_dbec64ddb377["enter()"]
  aff958ec_f8bd_7b1b_435a_dbec64ddb377 -->|calls| e81fb0ad_1039_a8c5_0f85_067da2e9a50c
  9f2f50fa_9a37_3be6_7a60_2ae854f23afc["leave()"]
  9f2f50fa_9a37_3be6_7a60_2ae854f23afc -->|calls| e81fb0ad_1039_a8c5_0f85_067da2e9a50c
  style e81fb0ad_1039_a8c5_0f85_067da2e9a50c fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

src/platforms/web/runtime/modules/transition.ts lines 304–319

function getHookArgumentsLength(fn: Function): boolean {
  if (isUndef(fn)) {
    return false
  }
  // @ts-expect-error
  const invokerFns = fn.fns
  if (isDef(invokerFns)) {
    // invoker
    return getHookArgumentsLength(
      Array.isArray(invokerFns) ? invokerFns[0] : invokerFns
    )
  } else {
    // @ts-expect-error
    return (fn._length || fn.length) > 1
  }
}