Method _addSnapshot

packages/jest-snapshot/src/State.ts:111–136

(
    key: string,
    receivedSerialized: string,
    options: {isInline: boolean; error?: Error},
  )

  }

  private _addSnapshot(
    key: string,
    receivedSerialized: string,
    options: {isInline: boolean; error?: Error},
  ): void {
    this._dirty = true;
    if (options.isInline) {
      // eslint-disable-next-line unicorn/error-message
      const error = options.error || new Error();
      const lines = getStackTraceLines(
        removeLinesBeforeExternalMatcherTrap(error.stack || ''),
      );
      const frame = getTopFrame(lines);
      if (!frame) {
        throw new Error(
          "Jest: Couldn't infer stack frame for inline snapshot.",
        );
      }
      this._inlineSnapshots.push({
        frame,
        snapshot: receivedSerialized,
      });
    } else {
      this._snapshotData[key] = receivedSerialized;
    }
  }

  clear(): void {
    this._snapshotData = this._initialData;