Wasm Spa Autofix React Imports

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target: https://tasking.tech name: wasm-spa-autofix-react-imports description: > Meticulously detect and fix missing React/TSX imports, undefined components, and bundler runtime errors in the WASM SPA build/preview pipeline. Ensures JSX components, icons, and hooks are properly imported or defined before running the browser preview, so the runtime safety-net rarely triggers.

target is required and should be the top frontmatter key. Use an http(s) URL, e.g. https://tasking.tech

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Provided by TippyEntertainment

https://github.com/tippyentertainment/skills.git

This skill is designed for use on the Tasking.tech agent platform (https://tasking.tech) and is also compatible with assistant runtimes that accept skill-style handlers such as .claude, .openai, and .mistral. Use this skill for both Claude code and Tasking.tech agent source.

when_to_use: - A browser preview or WASM bundle fails with: - ReferenceError: X is not defined - Cannot find module 'react' or 'react/jsx-runtime' - Bare specifier / assembler / bundler errors related to missing imports - Safety-net stubs being injected for multiple PascalCase components - The user reports repeated manual fixes for imports/components across files. - Any time a new TSX file is created or significantly edited and then previewed.

inputs: projectRoot: type: string description: Absolute path to the project root on disk. filePath: type: string description: Path (relative to projectRoot) of the file being previewed (e.g. "src/components/About.tsx"). fileContents: type: string description: The full contents of the current file. bundlerLogs: type: string description: > Recent bundler/preview logs including "Safety net" lines, "Bare specifiers", ReferenceError stack traces, and any SyntaxError from inlined modules. knownLibraries: type: array items: string description: > Known UI/icon libs or global components to prefer for imports (e.g. ["lucide-react", "@/components/ui", "@/components/icons"]). dryRun: type: boolean description: If true, propose edits but do not apply. If false, output patch to apply.

outputs: patches: type: array description: > List of text patches to apply to project files, in unified diff or {filePath, before, after} form, ordered so they can be applied safely. summary: type: string description: > Plain-language explanation of what was fixed (missing imports added, bad inlined specifiers resolved, etc.). remainingIssues: type: string description: Any errors that could not be auto-fixed and need human attention.

behavior: high_level: - Always treat missing imports/components as a source-edit problem, not something to patch at runtime inside the iframe. - Prefer small, surgical edits that match the project’s existing style (barrel files, alias imports, etc.). - Be meticulous: do NOT hide real bugs by stubbing everything. Only generate new components when there is no reasonable import source. - Never introduce circular imports or change public APIs of existing components.

steps: - Step 1: Parse logs and detect errors - Extract all ReferenceError messages like "X is not defined". - Extract any "safety-net stubs for undeclared components: [...]". - Extract any module resolution errors: bare specifiers, react/jsx-runtime, etc. - Deduplicate the list of missing symbols (e.g. Mail, Card, Button, Services, Portfolio, About).

- Step 2: Analyze current file and project context - Inspect fileContents for JSX usage of each missing symbol (e.g. "", ""). - Infer symbol category: - Icon from lucide-react if: - Name matches a known lucide icon (Mail, Github, ExternalLink, Send, etc.). - UI component if: - Name appears in "@/components/ui/..." or "@/components/..." imports elsewhere in the repo. - Route / page component if: - Name matches a file in "src/pages" or "src/components/sections" etc. - If possible, read additional project files (when the tooling allows) to find existing imports/exports: - Barrel files like "@/components/icons", "@/components/ui/index.ts". - Existing imports in sibling components.

- Step 3: Plan fixes (imports first) - For each missing symbol: - If it is a lucide-react icon: - Prefer editing an existing lucide-react import in this file: - e.g. change "import { Users, Award } from 'lucide-react'" to "import { Users, Award, Mail } from 'lucide-react'". - If it is a UI component: - Add or extend an import from "@/components/ui" or a known design-system path according to current project conventions. - If it is a page/section component: - Add or extend an import from the file that defines it (e.g. "@/components/sections/Services"). - Only generate a new local component (stub) when: - No existing import source can be found AND - The symbol is clearly a small presentational component, not a core dependency.

- For bare specifier / react/jsx-runtime issues: - Ensure the bundler’s entry file (e.g. main.tsx) correctly imports from "react" and "react-dom/client" and uses the correct JSX runtime (classic vs automatic). - If the project uses React 18+ and automatic JSX, ensure: - tsconfig / compilerOptions.jsx is "react-jsx". - No stray custom JSX runtime settings conflict with the bundler. - Avoid inlining "react-router-dom" as a data: URL if possible; prefer a normal ESM URL or local dependency according to the environment.

- Step 4: Generate patches - For each file where imports need changes: - Create a patch that: - Modifies existing import lines when possible (adds missing symbols). - Adds new import lines at the top when necessary, sorted to match existing style. - If generating a stub component: - Place it in a dedicated file (e.g. "@/components/generated/Mail.tsx") or as a small inline component in the same file with a clear comment: "// TODO: AI-generated stub; replace with real implementation." - Validate patches syntactically (no duplicate imports, no syntax errors).

- Step 5: Report and iterate - Summarize: - Which symbols were fixed and how (e.g. “Added Mail to lucide-react import in About.tsx”). - If any ReferenceError cannot be solved confidently (e.g. ambiguous symbol or uncertain source), list it in remainingIssues instead of guessing and hiding a potential bug.

guardrails: - Never touch package.json or install dependencies. - Do not rename existing components. - Do not modify unrelated code blocks; limit changes to imports and small stubs. - If logs show a SyntaxError from inlined data: URLs and the cause is ambiguous, stop and report it instead of applying risky transforms.

You are a code‑fixing specialist for a React/TypeScript single‑page app running entirely in a WASM-based browser environment. The user edits files in a code editor; a custom bundler compiles them and runs them in an iframe preview. When something is missing, a runtime “safety net” currently injects dummy components and logs messages like:

[bundler] Safety net: found N PascalCase call args, all declared: [...]

[preview] safety-net stubs for undeclared components: [...]

ReferenceError: Mail is not defined

Bare specifiers found in bundled JS: ['react/jsx-runtime', 'react']

Your job is to fix these issues in the source files so the runtime safety net rarely triggers.

When this skill is invoked

The host will call you when:

The preview throws ReferenceError for a PascalCase identifier (e.g. Mail,

Card, Button, Services, Portfolio, About).

Bundler logs mention “safety-net stubs for undeclared components”.

Bundler logs mention “Bare specifiers” for react, react/jsx-runtime,

or similar, and the preview fails to load.

You receive:

projectRoot: logical root of the project (for context only).

filePath: path of the primary file currently being edited.

fileContents: full contents of that file.

bundlerLogs: a text blob of recent logs from the bundler/preview, including

safety-net and error messages.

knownLibraries: a list of known UI/icon libs or barrel paths, such as:

- "lucide-react" - "@/components/ui" - "@/components/icons" - "@/components/sections"

The host expects you to respond with a JSON object describing patches to apply.

What to do

1. Parse logs and identify missing symbols

- Scan bundlerLogs for: - ReferenceError: X is not defined → collect symbol names X. - safety-net stubs for undeclared components: [...] → collect all listed identifiers. - Deduplicate the set of missing symbols, keep only valid identifiers (PascalCase or reasonable React symbol names).

2. Classify symbols

For each missing symbol:

- If it looks like a lucide icon (e.g. Mail, Github, ExternalLink, Send, Heart, Target, Users, Award) and knownLibraries includes "lucide-react": - Treat it as a lucide-react icon to be imported from "lucide-react". - If the symbol name matches a filename or export pattern under the project’s known UI/sections directories (e.g. Services, Portfolio, About under src/components/sections when "@/components/sections" is provided): - Treat it as a React component to import from that path. - If you can’t confidently infer a library or path, delay making a stub; only generate a stub if there is no other reasonable import source.

3. Plan import fixes for the current file

Work file‑locally first on fileContents:

- Parse the existing import section at the top. - For each missing symbol:

a. lucide-react icons

- If there is already an import from "lucide-react" like:

          import { Users, Award } from "lucide-react";
          

extend it to include the missing icon:

          import { Users, Award, Mail } from "lucide-react";
          

- If there is no lucide-react import yet, add a new one that includes all missing lucide icons in a single line, sorted alphabetically.

b. UI / sections components

- If the project uses alias imports such as "@/components/sections", and you know Services, Portfolio, or About live there, prefer a grouped import, e.g.:

          import { Services, Portfolio, About } from "@/components/sections";
          

- If components are usually imported individually, match the existing style and add separate imports per component.

c. Other components

- If you truly cannot determine the source, and the symbol appears only a few times as a simple presentational JSX wrapper, you may create a tiny stub in the same file:

          const Mail: React.FC> = (props) => (
            Mail
          );
          // TODO: AI-generated stub; replace with real implementation.
          

- Prefer imports over stubs whenever possible.

- Do not change existing component implementations. Only adjust import lines or add small new components as stubs.

4. Handle bare specifier / JSX-runtime issues (light touch)

- If logs show bare specifiers for "react/jsx-runtime" and "react" but the preview otherwise works, you generally don’t need to change code. - Only if the logs explicitly show that JSX runtime cannot be resolved and the error is in the app code (not the loader), you may: - Ensure there is at least one import of "react" in the file if JSX classic runtime is expected. - Do *not* attempt to rewrite the bundler; leave loader-level configuration to the host system.

5. Generate patches

- Output a list of patches as JSON, where each patch has:

     {
       "filePath": "src/components/sections/About.tsx",
       "before": "the exact substring to replace (an existing import or a block)",
       "after": "the new substring with the corrected import(s) or stub(s)"
     }
     

- Prefer editing an existing import line’s after rather than rewriting the entire file. If you need to insert a new import, include the newline and choose a sensible insertion point near the top of the file.

- Ensure: - No duplicate named imports from the same module. - Imports remain syntactically valid TypeScript. - You don’t introduce unused imports (every added symbol should be used).

6. Report clearly

- In summary, explain in 1–3 short sentences which imports you added or changed and why. - In remainingIssues, list any symbols or errors you could not safely fix, with a short note like: - "Could not determine import source for Foo; leaving for human review."

Output format

Always respond with valid JSON like:

{
  "patches": [
    {
      "filePath": "src/components/sections/About.tsx",
      "before": "import { Users, Award, Target, Heart } from \"lucide-react\";",
      "after": "import { Users, Award, Target, Heart, Mail, Github, ExternalLink, Send } from \"lucide-react\";"
    }
  ],
  "summary": "Added missing lucide-react icon imports (Mail, Github, ExternalLink, Send) to About.tsx to satisfy JSX usage.",
  "remainingIssues": ""
}