Function getTypeCheckInfoAtPosition

packages/language-service/src/utils/index.ts:177–192

(
  fileName: string,
  position: number,
  compiler: NgCompiler,
)

 * Retrieves the `ts.ClassDeclaration` at a location along with its template AST nodes.
 */
export function getTypeCheckInfoAtPosition(
  fileName: string,
  position: number,
  compiler: NgCompiler,
): TypeCheckInfo | undefined {
  if (isTypeScriptFile(fileName)) {
    const sf = compiler.getCurrentProgram().getSourceFile(fileName);
    if (sf === undefined) {
      return undefined;
    }

    return getInlineTypeCheckInfoAtPosition(sf, position, compiler);
  } else {
    return getFirstComponentForTemplateFile(fileName, compiler);
  }
}

/**
 * First, attempt to sort component declarations by file name.