Class CodeInjection

packages/bundler-plugins/src/core/utils.ts:446–484

}

export class CodeInjection {
  // The code below is mostly ternary operators because it saves bundle size.
  // The checks are to support as many environments as possible. (Node.js, Browser, webworkers, etc.)
  private readonly header: string;
  private readonly footer: string;

  constructor(private body: string = '') {
    this.header = `!function(){try{var e="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof globalThis?globalThis:"undefined"!=typeof self?self:{};`;
    this.footer = '}catch(e){}}();';
  }

  public code(): string {
    if (this.isEmpty()) {
      return '';
    }

    return this.header + this.body + this.footer;
  }

  public isEmpty(): boolean {
    return this.body.length === 0;
  }

  public append(code: CodeInjection | string): void {
    if (code instanceof CodeInjection) {
      this.body += code.body;
    } else {
      this.body += code;
    }
  }

  public clear(): void {
    this.body = '';
  }

  public clone(): CodeInjection {
    return new CodeInjection(this.body);
  }
}