Function describeBuiltInComponentFrame

packages/shared/ReactComponentStackFrame.js:20–41

(name: string)

let prefix;
let suffix;
export function describeBuiltInComponentFrame(name: string): string {
  if (prefix === undefined) {
    // Extract the VM specific prefix used by each line.
    try {
      throw Error();
    } catch (x) {
      const match = x.stack.trim().match(/\n( *(at )?)/);
      prefix = (match && match[1]) || '';
      suffix =
        x.stack.indexOf('\n    at') > -1
          ? // V8
            ' (<anonymous>)'
          : // JSC/Spidermonkey
            x.stack.indexOf('@') > -1
            ? '@unknown:0:0'
            : // Other
              '';
    }
  }
  // We use the prefix to ensure our stacks line up with native stack frames.
  return '\n' + prefix + name + suffix;
}

export function describeDebugInfoFrame(
  name: string,