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isUndef() — vue Function Reference

Architecture documentation for the isUndef() function in util.ts from the vue codebase.

Function typescript WebPlatform DomUtilities called by 21

Entity Profile

Dependency Diagram

graph TD
  299f2646_f776_9b7d_1179_7b9087b1e66c["isUndef()"]
  5c31f360_ac69_0a14_e083_68773e1a8fb7["renderAttrs()"]
  5c31f360_ac69_0a14_e083_68773e1a8fb7 -->|calls| 299f2646_f776_9b7d_1179_7b9087b1e66c
  0fddbd73_542f_66b0_9163_a3b836d87f09["renderDOMProps()"]
  0fddbd73_542f_66b0_9163_a3b836d87f09 -->|calls| 299f2646_f776_9b7d_1179_7b9087b1e66c
  aa8bd4ea_fa85_d5ae_4a66_dfaa11bbbedf["next()"]
  aa8bd4ea_fa85_d5ae_4a66_dfaa11bbbedf -->|calls| 299f2646_f776_9b7d_1179_7b9087b1e66c
  6241e8b8_bd4c_c780_a955_9ccd5b8211f7["normalizeAsync()"]
  6241e8b8_bd4c_c780_a955_9ccd5b8211f7 -->|calls| 299f2646_f776_9b7d_1179_7b9087b1e66c
  5dc11fa1_4fde_c7b7_e1fd_54a1954c09fd["_read()"]
  5dc11fa1_4fde_c7b7_e1fd_54a1954c09fd -->|calls| 299f2646_f776_9b7d_1179_7b9087b1e66c
  c9350833_548a_8bf0_2285_11ffe157d7aa["normalizeRender()"]
  c9350833_548a_8bf0_2285_11ffe157d7aa -->|calls| 299f2646_f776_9b7d_1179_7b9087b1e66c
  f98325d3_a650_0f85_8573_d782ecc5b533["renderComponent()"]
  f98325d3_a650_0f85_8573_d782ecc5b533 -->|calls| 299f2646_f776_9b7d_1179_7b9087b1e66c
  fc04216e_62e6_e181_81ff_b2b3c5f35a97["renderStringNode()"]
  fc04216e_62e6_e181_81ff_b2b3c5f35a97 -->|calls| 299f2646_f776_9b7d_1179_7b9087b1e66c
  d01aa4a1_3c46_4b89_d557_7244e1de2f8f["renderElement()"]
  d01aa4a1_3c46_4b89_d557_7244e1de2f8f -->|calls| 299f2646_f776_9b7d_1179_7b9087b1e66c
  4eef67a1_feb3_dd8c_e42a_2d625c9694ff["renderStartingTag()"]
  4eef67a1_feb3_dd8c_e42a_2d625c9694ff -->|calls| 299f2646_f776_9b7d_1179_7b9087b1e66c
  7d583d18_9b13_ab67_6ea8_ecb63c1af2ff["mergeVNodeHook()"]
  7d583d18_9b13_ab67_6ea8_ecb63c1af2ff -->|calls| 299f2646_f776_9b7d_1179_7b9087b1e66c
  242e8703_557d_b7a4_e1e5_d4b525f65345["normalizeArrayChildren()"]
  242e8703_557d_b7a4_e1e5_d4b525f65345 -->|calls| 299f2646_f776_9b7d_1179_7b9087b1e66c
  4d849b35_fe08_435b_7744_f8bdbf4e35e9["updateListeners()"]
  4d849b35_fe08_435b_7744_f8bdbf4e35e9 -->|calls| 299f2646_f776_9b7d_1179_7b9087b1e66c
  260c9082_4eba_7d9d_1e58_10f6149dde5e["updateAttrs()"]
  260c9082_4eba_7d9d_1e58_10f6149dde5e -->|calls| 299f2646_f776_9b7d_1179_7b9087b1e66c
  style 299f2646_f776_9b7d_1179_7b9087b1e66c fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

src/shared/util.ts lines 7–9

export function isUndef(v: any): v is undefined | null {
  return v === undefined || v === null
}

Domain

Subdomains

Called By

Source

Frequently Asked Questions

What does isUndef() do?
isUndef() is a function in the vue codebase.
What calls isUndef()?
isUndef() is called by 21 function(s): _read, enter, getHookArgumentsLength, leave, mergeVNodeHook, next, normalizeArrayChildren, normalizeAsync, and 13 more.

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