Function getFormatDiagnosticsHost

packages/compiler-cli/src/main.ts:182–200

(options?: api.CompilerOptions)

}

function getFormatDiagnosticsHost(options?: api.CompilerOptions): ts.FormatDiagnosticsHost {
  const basePath = options ? options.basePath : undefined;
  return {
    getCurrentDirectory: () => basePath || ts.sys.getCurrentDirectory(),
    // We need to normalize the path separators here because by default, TypeScript
    // compiler hosts use posix canonical paths. In order to print consistent diagnostics,
    // we also normalize the paths.
    getCanonicalFileName: (fileName) => fileName.replace(/\\/g, '/'),
    getNewLine: () => {
      // Manually determine the proper new line string based on the passed compiler
      // options. There is no public TypeScript function that returns the corresponding
      // new line string. see: https://github.com/Microsoft/TypeScript/issues/29581
      if (options && options.newLine !== undefined) {
        return options.newLine === ts.NewLineKind.LineFeed ? '\n' : '\r\n';
      }
      return ts.sys.newLine;
    },
  };
}

function reportErrorsAndExit(
  allDiagnostics: ReadonlyArray<ts.Diagnostic>,