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📄 createParserServices.ts

📊 Analysis Summary

Metric	Count
🔧 Functions	5
📦 Imports	2

📚 Table of Contents

• Imports
• Functions

🛠️ File Location:

📂 packages/typescript-estree/src/createParserServices.ts

📦 Imports

Name	Source
ASTMaps	./convert
ParserServices	./parser-options

---

Functions

createParserServices(astMaps: ASTMaps, program: ts.Program | null): ParserServices

Code

export function createParserServices(
  astMaps: ASTMaps,
  program: ts.Program | null,
): ParserServices {
  if (!program) {
    return {
      emitDecoratorMetadata: undefined,
      experimentalDecorators: undefined,
      isolatedDeclarations: undefined,
      program,
      // we always return the node maps because
      // (a) they don't require type info and
      // (b) they can be useful when using some of TS's internal non-type-aware AST utils
      ...astMaps,
    };
  }

  const checker = program.getTypeChecker();
  const compilerOptions = program.getCompilerOptions();

  return {
    program,
    // not set in the config is the same as off
    emitDecoratorMetadata: compilerOptions.emitDecoratorMetadata ?? false,
    experimentalDecorators: compilerOptions.experimentalDecorators ?? false,
    isolatedDeclarations: compilerOptions.isolatedDeclarations ?? false,
    ...astMaps,
    getSymbolAtLocation: node =>
      checker.getSymbolAtLocation(astMaps.esTreeNodeToTSNodeMap.get(node)),
    getTypeAtLocation: node =>
      checker.getTypeAtLocation(astMaps.esTreeNodeToTSNodeMap.get(node)),
  };
}

• Parameters:
• astMaps: ASTMaps
• program: ts.Program | null
• Return Type: ParserServices
• Calls:
• program.getTypeChecker
• program.getCompilerOptions
• checker.getSymbolAtLocation
• astMaps.esTreeNodeToTSNodeMap.get
• checker.getTypeAtLocation
• Internal Comments:

  // we always return the node maps because
  // (a) they don't require type info and
  // (b) they can be useful when using some of TS's internal non-type-aware AST utils
  // not set in the config is the same as off (x2)
  

getSymbolAtLocation(node: TSESTree.Node): any

Code

node =>
      checker.getSymbolAtLocation(astMaps.esTreeNodeToTSNodeMap.get(node))

• Parameters:
• node: TSESTree.Node
• Return Type: any
• Calls:
• checker.getSymbolAtLocation

getTypeAtLocation(node: TSESTree.Node): any

Code

node =>
      checker.getTypeAtLocation(astMaps.esTreeNodeToTSNodeMap.get(node))

• Parameters:
• node: TSESTree.Node
• Return Type: any
• Calls:
• checker.getTypeAtLocation

getSymbolAtLocation(node: TSESTree.Node): any

Code

node =>
      checker.getSymbolAtLocation(astMaps.esTreeNodeToTSNodeMap.get(node))

• Parameters:
• node: TSESTree.Node
• Return Type: any
• Calls:
• checker.getSymbolAtLocation

getTypeAtLocation(node: TSESTree.Node): any

Code

node =>
      checker.getTypeAtLocation(astMaps.esTreeNodeToTSNodeMap.get(node))

• Parameters:
• node: TSESTree.Node
• Return Type: any
• Calls:
• checker.getTypeAtLocation

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