isReferencedIdentifier() — vue Function Reference

Architecture documentation for the isReferencedIdentifier() function in babelUtils.ts from the vue codebase.

Function typescript CompilerSFC StyleProcessor calls 2 called by 1

Entity Profile

CompilerSFC→ StyleProcessor→ isReferencedIdentifier() — vue Function Reference

Dependency Diagram

graph TD
  6a4dcb82_14bf_768b_c362_246755645991["isReferencedIdentifier()"]
  946e0fa6_6c05_b820_0bd7_980d6d869192["babelUtils.ts"]
  6a4dcb82_14bf_768b_c362_246755645991 -->|defined in| 946e0fa6_6c05_b820_0bd7_980d6d869192
  6821e51e_382f_8ff8_ca9d_3b77f896018a["walkIdentifiers()"]
  6821e51e_382f_8ff8_ca9d_3b77f896018a -->|calls| 6a4dcb82_14bf_768b_c362_246755645991
  00dff71a_1ef9_2cee_4dec_7ec3d8892084["isReferenced()"]
  6a4dcb82_14bf_768b_c362_246755645991 -->|calls| 00dff71a_1ef9_2cee_4dec_7ec3d8892084
  9a980550_c20e_add5_a7c7_1e61a200b3ad["isInDestructureAssignment()"]
  6a4dcb82_14bf_768b_c362_246755645991 -->|calls| 9a980550_c20e_add5_a7c7_1e61a200b3ad
  style 6a4dcb82_14bf_768b_c362_246755645991 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/compiler-sfc/src/babelUtils.ts lines 87–117

export function isReferencedIdentifier(
  id: Identifier,
  parent: Node | null,
  parentStack: Node[]
) {
  if (!parent) {
    return true
  }

  // is a special keyword but parsed as identifier
  if (id.name === 'arguments') {
    return false
  }

  if (isReferenced(id, parent)) {
    return true
  }

  // babel's isReferenced check returns false for ids being assigned to, so we
  // need to cover those cases here
  switch (parent.type) {
    case 'AssignmentExpression':
    case 'AssignmentPattern':
      return true
    case 'ObjectPattern':
    case 'ArrayPattern':
      return isInDestructureAssignment(parent, parentStack)
  }

  return false
}