fix(run): bug causing runs to fail if files use alias imports - #1622
Atchyut Preetham Pulavarthi (theonly1me) merged 2 commits into
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Included review availability: Your plan provides up to 8 included reviews per hour; 6 remain after this review. WalkthroughThe change adds TypeScript path-alias parsing and resolution with exact-match and longest-prefix wildcard rules. It rewrites eligible imports, exports, and literal dynamic imports to relative paths when staged project files contain matching targets. Project-based runs apply the rewriting while excluding Priority: ⬇️ Low Estimated code review effort: 4 (Complex) | ~45 minutes Change: Bug fix Sequence Diagram(s)sequenceDiagram
participant prepareRunDir
participant rewriteStagedAliases
participant FileSystem
participant rewriteAliasImports
prepareRunDir->>rewriteStagedAliases: process project staging directory
rewriteStagedAliases->>FileSystem: read tsconfig.json and source files
FileSystem-->>rewriteStagedAliases: aliases and source contents
rewriteStagedAliases->>rewriteAliasImports: resolve and rewrite imports
rewriteAliasImports-->>rewriteStagedAliases: updated source contents
rewriteStagedAliases->>FileSystem: write changed files
rewriteStagedAliases-->>prepareRunDir: return rewritten paths
Merge Risk: 🟡 Moderate · up to Valid projects can still leave aliases unreplaced, causing local runs to fail when Node treats those aliases as package names. 🚥 Pre-merge checks | ✅ 3 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (3 passed)
Full details: Title checkExplanation The title uses a valid Conventional Commits type and describes the alias-import failure, but its description is not imperative. "bug causing runs to fail" is a noun phrase rather than an imperative such as "fix alias imports that cause runs to fail." ✨ Finishing Touches🧪 Generate unit tests (beta)
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Inline comments:
In `@src/core/aliasImports/filePathVariants.ts`:
- Around line 1-14: Update sourceExtensionPattern and sourceExtensions in
filePathVariants to include .jsx and .tsx, so extensionless and index candidates
cover JavaScript and TypeScript JSX targets while preserving the existing .js
and .ts behavior.
In `@src/core/aliasImports/tsconfigPaths.ts`:
- Around line 97-104: Update the target-resolution logic around
findTargetFilePath to iterate through every entry in match.targets in order,
substituting the matched path for each target and stopping at the first existing
file. Do not destructure only match.targets[0]; preserve the ordered fallback
behavior and leave the alias unresolved only when no configured target resolves.
- Around line 24-34: Update readTsconfigPaths and parseTsconfigPaths to load the
effective TypeScript configuration through the TypeScript configuration API
instead of JSON.parse, using an Fs-backed host so extends files are read and
comments are accepted. Resolve the effective baseUrl and normalize the resulting
path mappings before passing them to the pure alias-rewrite utility, preserving
undefined behavior when no valid paths are available. Add coverage for
commented, inherited, and baseUrl-relative configurations.
In `@src/domains/runtimeEnv/rewriteStagedAliases.ts`:
- Line 13: Expand sourceExtensions to include all TypeScript and JavaScript
variants: .ts, .tsx, .mts, .cts, .js, .jsx, .mjs, and .cjs, so
rewriteStagedAliases processes aliases in every supported staged source file.
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📒 Files selected for processing (20)
.changeset/tsconfig-path-aliases.mdsrc/core/aliasImports/collectAliasSpecifiers.tssrc/core/aliasImports/filePathVariants.test.tssrc/core/aliasImports/filePathVariants.tssrc/core/aliasImports/rewriteAliasImports.test.tssrc/core/aliasImports/rewriteAliasImports.tssrc/core/aliasImports/tsconfigPaths.test.tssrc/core/aliasImports/tsconfigPaths.tssrc/core/errors.test.tssrc/core/errors.tssrc/core/flowFailureHint.test.tssrc/core/flowFailureHint.tssrc/core/interactiveRunner/getImports.tssrc/core/interactiveRunner/resolveImportPath.tssrc/core/interactiveRunner/tsconfigPaths.tssrc/core/messages/runner.tssrc/domains/runtimeEnv/prepareRunDir.tssrc/domains/runtimeEnv/rewriteStagedAliases.test.tssrc/domains/runtimeEnv/rewriteStagedAliases.tssrc/shell/interactiveRunner/collectRunFiles.ts
💤 Files with no reviewable changes (1)
- src/core/interactiveRunner/tsconfigPaths.ts
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Overview of Changes
A flow that imports through a tsconfig path alias fails locally with
Cannot find package '@utilities/gpt-helpers.ts', because the staged copy of the project hands the alias straight to Node, which goes looking for an npm package by that name. Staging now rewrites every alias into the equivalent relative import, which is what the platform runner does before it runs a flow, so the same flow runs locally and in the cloud. Alias patterns follow TypeScript's own selection rules now, and an alias that still does not resolve points atcompilerOptions.pathsinstead of telling you tonpm installit.Testing
bun run typecheck bun run lint bun run format:check bun run knip bun run test bun run buildRan a project whose flow reaches a utility through two alias hops (
flow→@pages/admin/funnel-detail-page.ts→@utilities/gpt-helpers.ts) on every lane that ships:--workers 2subprocess poolRemoving
pathsfrom that project's tsconfig reproduces the original failure and prints the new hint. A deliberate throw inside the aliased module reportsfunnel-detail-page.ts:6:9, so the rewrite leaves line and column positions alone.Checklist