Home / Function/ isUndef() — vue Function Reference

isUndef() — vue Function Reference

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

Function typescript TemplateCompiler HTMLParser called by 21

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Dependency Diagram

graph TD
  a1f5b8ca_b6d5_6b24_155e_038685c97c85["isUndef()"]
  a0b4404b_fb84_98b3_4f7a_375b041a7128["renderAttrs()"]
  a0b4404b_fb84_98b3_4f7a_375b041a7128 -->|calls| a1f5b8ca_b6d5_6b24_155e_038685c97c85
  c0b33b28_c53f_db55_fab1_7f6054379fe4["renderDOMProps()"]
  c0b33b28_c53f_db55_fab1_7f6054379fe4 -->|calls| a1f5b8ca_b6d5_6b24_155e_038685c97c85
  1ffb05c8_3cc3_e1d5_cfe6_6c27dfbdebb4["next()"]
  1ffb05c8_3cc3_e1d5_cfe6_6c27dfbdebb4 -->|calls| a1f5b8ca_b6d5_6b24_155e_038685c97c85
  e3ef7cea_179b_7c08_2222_a8a2e71458a4["normalizeAsync()"]
  e3ef7cea_179b_7c08_2222_a8a2e71458a4 -->|calls| a1f5b8ca_b6d5_6b24_155e_038685c97c85
  04b43da9_1cb6_3849_9bca_737db9b5fd1b["_read()"]
  04b43da9_1cb6_3849_9bca_737db9b5fd1b -->|calls| a1f5b8ca_b6d5_6b24_155e_038685c97c85
  f2ea83ff_0435_4be8_87ac_f6ab0b96233a["normalizeRender()"]
  f2ea83ff_0435_4be8_87ac_f6ab0b96233a -->|calls| a1f5b8ca_b6d5_6b24_155e_038685c97c85
  9be52295_4e01_b6fd_a016_873e7cb61153["renderComponent()"]
  9be52295_4e01_b6fd_a016_873e7cb61153 -->|calls| a1f5b8ca_b6d5_6b24_155e_038685c97c85
  3b296824_bb49_8def_112f_2fe6e8797413["renderStringNode()"]
  3b296824_bb49_8def_112f_2fe6e8797413 -->|calls| a1f5b8ca_b6d5_6b24_155e_038685c97c85
  ea57a750_853d_071e_282c_4b7157987b46["renderElement()"]
  ea57a750_853d_071e_282c_4b7157987b46 -->|calls| a1f5b8ca_b6d5_6b24_155e_038685c97c85
  4c03e6b5_515a_506e_9433_bf75e6caf6a5["renderStartingTag()"]
  4c03e6b5_515a_506e_9433_bf75e6caf6a5 -->|calls| a1f5b8ca_b6d5_6b24_155e_038685c97c85
  38d5358a_5801_0a5e_38cd_cefe2ffa0cfb["mergeVNodeHook()"]
  38d5358a_5801_0a5e_38cd_cefe2ffa0cfb -->|calls| a1f5b8ca_b6d5_6b24_155e_038685c97c85
  1440068e_e497_905d_990b_b0c74b435762["normalizeArrayChildren()"]
  1440068e_e497_905d_990b_b0c74b435762 -->|calls| a1f5b8ca_b6d5_6b24_155e_038685c97c85
  267404f1_c1f9_093c_5774_34422e2a9325["updateListeners()"]
  267404f1_c1f9_093c_5774_34422e2a9325 -->|calls| a1f5b8ca_b6d5_6b24_155e_038685c97c85
  c5d4449b_b590_4e29_f364_15e43415b270["updateAttrs()"]
  c5d4449b_b590_4e29_f364_15e43415b270 -->|calls| a1f5b8ca_b6d5_6b24_155e_038685c97c85
  style a1f5b8ca_b6d5_6b24_155e_038685c97c85 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

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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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