microsoft/playwright · error · Error

Usage: playwright.query('Playwright >> selector').

Error message

Usage: playwright.query('Playwright >> selector').

What it means

Error "Usage: playwright.query('Playwright >> selector')." thrown in microsoft/playwright.

Source

Thrown at packages/injected/src/consoleApi.ts:111

      selector: (element: Element) => this._selector(element),
      generateLocator: (element: Element, language?: Language) => this._generateLocator(element, language),
      ariaSnapshot: (element?: Element, options?: AriaTreeOptions) => {
        return this._injectedScript.ariaSnapshot(element || this._injectedScript.document.body, options || { mode: 'default' });
      },
      resume: () => this._resume(),
      ...new Locator(this._injectedScript, ''),
    };
    delete this._injectedScript.window.playwright.filter;
    delete this._injectedScript.window.playwright.first;
    delete this._injectedScript.window.playwright.last;
    delete this._injectedScript.window.playwright.nth;
    delete this._injectedScript.window.playwright.and;
    delete this._injectedScript.window.playwright.or;
  }

  private _querySelector(selector: string, strict: boolean): (Element | undefined) {
    if (typeof selector !== 'string')
      throw new Error(`Usage: playwright.query('Playwright >> selector').`);
    const parsed = this._injectedScript.parseSelector(selector);
    return this._injectedScript.querySelector(parsed, this._injectedScript.document, strict);
  }

  private _querySelectorAll(selector: string): Element[] {
    if (typeof selector !== 'string')
      throw new Error(`Usage: playwright.$$('Playwright >> selector').`);
    const parsed = this._injectedScript.parseSelector(selector);
    return this._injectedScript.querySelectorAll(parsed, this._injectedScript.document);
  }

  private _inspect(selector: string) {
    if (typeof selector !== 'string')
      throw new Error(`Usage: playwright.inspect('Playwright >> selector').`);
    this._injectedScript.window.inspect(this._querySelector(selector, false));
  }

  private _selector(element: Element) {

View on GitHub (pinned to c8fc3bf8d3)

When it happens

Trigger: Thrown at packages/injected/src/consoleApi.ts:111 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of microsoft/playwright@c8fc3bf8d3 (2026-08-12). Data as JSON: /api/errors/28080435da7b8c3f. Report an issue: GitHub.