{"record":{"id":"5ea699fd92db11eb","repo":"microsoft/playwright","slug":"text-is-engine-expects-a-single-string","errorCode":null,"errorMessage":"\"text-is\" engine expects a single string","messagePattern":"\"text-is\" engine expects a single string","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"packages/injected/src/selectorEvaluator.ts","lineNumber":475,"sourceCode":"      throw new Error(`\"visible\" engine expects no arguments`);\n    return isElementVisible(element);\n  }\n};\n\nconst textEngine: SelectorEngine = {\n  matches(element: Element, args: (string | number | Selector)[], context: QueryContext, evaluator: SelectorEvaluator): boolean {\n    if (args.length !== 1 || typeof args[0] !== 'string')\n      throw new Error(`\"text\" engine expects a single string`);\n    const text = normalizeWhiteSpace(args[0]).toLowerCase();\n    const matcher = (elementText: ElementText) => elementText.normalized.toLowerCase().includes(text);\n    return elementMatchesText((evaluator as SelectorEvaluatorImpl)._cacheText, element, matcher) === 'self';\n  },\n};\n\nconst textIsEngine: SelectorEngine = {\n  matches(element: Element, args: (string | number | Selector)[], context: QueryContext, evaluator: SelectorEvaluator): boolean {\n    if (args.length !== 1 || typeof args[0] !== 'string')\n      throw new Error(`\"text-is\" engine expects a single string`);\n    const text = normalizeWhiteSpace(args[0]);\n    const matcher = (elementText: ElementText) => {\n      if (!text && !elementText.immediate.length)\n        return true;\n      return elementText.immediate.some(s => normalizeWhiteSpace(s) === text);\n    };\n    return elementMatchesText((evaluator as SelectorEvaluatorImpl)._cacheText, element, matcher) !== 'none';\n  },\n};\n\nconst textMatchesEngine: SelectorEngine = {\n  matches(element: Element, args: (string | number | Selector)[], context: QueryContext, evaluator: SelectorEvaluator): boolean {\n    if (args.length === 0 || typeof args[0] !== 'string' || args.length > 2 || (args.length === 2 && typeof args[1] !== 'string'))\n      throw new Error(`\"text-matches\" engine expects a regexp body and optional regexp flags`);\n    const re = new RegExp(args[0], args.length === 2 ? args[1] : undefined);\n    const matcher = (elementText: ElementText) => re.test(elementText.full);\n    return elementMatchesText((evaluator as SelectorEvaluatorImpl)._cacheText, element, matcher) === 'self';\n  },","sourceCodeStart":457,"sourceCodeEnd":493,"githubUrl":"https://github.com/microsoft/playwright/blob/c8fc3bf8d31542d59b4d4d9eaab1df93ff541dc6/packages/injected/src/selectorEvaluator.ts#L457-L493","documentation":"Error \"\"text-is\" engine expects a single string\" thrown in microsoft/playwright.","triggerScenarios":"Thrown at packages/injected/src/selectorEvaluator.ts:475 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"c8fc3bf8d31542d59b4d4d9eaab1df93ff541dc6","analyzedAt":"2026-08-12T07:26:36.950Z","schemaVersion":2},"datasetVersion":"2026-08-12T13:17:24.610Z"}