{"record":{"id":"9db479c24580bcaf","repo":"slint-ui/slint","slug":"warning-w","errorCode":null,"errorMessage":"Warning: ${w}","messagePattern":"Warning: (.+?)","errorType":"console","errorClass":null,"httpStatus":null,"severity":"warning","filePath":"api/node/typescript/index.ts","lineNumber":333,"sourceCode":"        }\n        if (typeof options.fileLoader !== \"undefined\") {\n            compiler.fileLoader = options.fileLoader;\n        }\n    }\n\n    const definitions =\n        loadData.from === \"file\"\n            ? compiler.buildFromPath(filePath)\n            : compiler.buildFromSource(loadData.fileData.source, filePath);\n    const diagnostics = compiler.diagnostics;\n\n    if (diagnostics.length > 0) {\n        const warnings = diagnostics.filter(\n            (d) => d.level === napi.DiagnosticLevel.Warning,\n        );\n\n        if (typeof options !== \"undefined\" && options.quiet !== true) {\n            warnings.forEach((w) => console.warn(\"Warning: \" + w));\n        }\n\n        const errors = diagnostics.filter(\n            (d) => d.level === napi.DiagnosticLevel.Error,\n        );\n\n        if (errors.length > 0) {\n            throw new CompileError(\"Could not compile \" + filePath, errors);\n        }\n    }\n\n    const slint_module = Object.create({});\n\n    // generate structs\n    const structs = compiler.structs;\n\n    for (const key in compiler.structs) {\n        Object.defineProperty(slint_module, translateName(key), {","sourceCodeStart":315,"sourceCodeEnd":351,"githubUrl":"https://github.com/slint-ui/slint/blob/bb937076de3f7919766c1f25e2e969367cf77e9a/api/node/typescript/index.ts#L315-L351","documentation":"This is Node.js console.warn output in the Node/TypeScript API's `loadSlint` (used by loadFile and loadSource): when compiling a .slint document produces diagnostics of level Warning and `options.quiet !== true`, each warning is printed as \"Warning: \" + diagnostic. It is informational output, not an exception; compilation may still have succeeded unless errors are also present.","triggerScenarios":"Calling loadFile/loadSource (without `{ quiet: true }`) on a .slint file whose compilation emits warnings — e.g. deprecated syntax, unused elements, or suspicious constructs recognized by the Slint compiler.","commonSituations":"Loading legacy .slint files after a Slint version upgrade, files using deprecated properties or syntax, or CI logs cluttered with compiler warnings.","solutions":["Fix the .slint source issues the warnings point to","Pass `{ quiet: true }` in the loadSlint options to suppress console output","Handle diagnostics programmatically instead of relying on console output","Update deprecated constructs flagged by the newer compiler version"],"exampleFix":"// before\nawait slint.loadSlint(sourcePath);\n// after\nawait slint.loadSlint(sourcePath, { quiet: true });","handlingStrategy":"try-catch","validationCode":"// Pre-check the .slint source with the compiler API or LSP for warnings\n// before loadSlint, or review diagnostics returned by the loader.","typeGuard":"function hasWarnings(diagnostics: napi.Diagnostic[]): napi.Diagnostic[] {\n    return diagnostics.filter((d) => d.level === napi.DiagnosticLevel.Warning);\n}","tryCatchPattern":"try {\n    await slint.loadSlint(path, { quiet: true });\n} catch (e) {\n    console.error(\"Failed to load slint file:\", e);\n}","preventionTips":["Fix compiler warnings in .slint sources promptly — they often precede errors","Use options.quiet in CI or scripted runs","Re-run compilation after upgrading Slint to catch new deprecation warnings","Keep .slint files aligned with current compiler syntax"],"tags":["nodejs","typescript","compiler-warnings","diagnostics"],"backgroundTag":"deprecated-api-usage","analyzedSha":"bb937076de3f7919766c1f25e2e969367cf77e9a","analyzedAt":"2026-09-16T01:37:20.251Z","contentChangedAt":"2026-09-16T01:37:20.251Z","schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}