getHookArgumentsLength() — vue Function Reference

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

Function typescript WebPlatform WebRuntime calls 2 called by 2

Entity Profile

WebPlatform→ WebRuntime→ getHookArgumentsLength() — vue Function Reference

Dependency Diagram

graph TD
  f8796a4d_0b93_c2df_44b2_78106ba2d82c["getHookArgumentsLength()"]
  b003e13b_30f4_2501_b631_df864fa7941b["enter()"]
  b003e13b_30f4_2501_b631_df864fa7941b -->|calls| f8796a4d_0b93_c2df_44b2_78106ba2d82c
  29af0f73_d62b_5291_e707_1f3301bf3357["leave()"]
  29af0f73_d62b_5291_e707_1f3301bf3357 -->|calls| f8796a4d_0b93_c2df_44b2_78106ba2d82c
  a1f5b8ca_b6d5_6b24_155e_038685c97c85["isUndef()"]
  f8796a4d_0b93_c2df_44b2_78106ba2d82c -->|calls| a1f5b8ca_b6d5_6b24_155e_038685c97c85
  2be3818d_a4f3_495c_543c_ee071b428982["isDef()"]
  f8796a4d_0b93_c2df_44b2_78106ba2d82c -->|calls| 2be3818d_a4f3_495c_543c_ee071b428982
  style f8796a4d_0b93_c2df_44b2_78106ba2d82c 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
  }
}