Enable TypeScript 7 RC side-by-side with TypeScript 6 by Copilot · Pull Request #3151 · Hack23/riksdagsmonitor

Copilot · 2026-07-08T10:53:29Z

TypeScript 7.0 RC ships a new tsc binary, but the stable programmatic API is not yet available. To keep the project on the current toolchain while evaluating the RC, the repository now runs TypeScript 7 RC side-by-side with TypeScript 6 without conflicting binary resolution.

Summary
- The repo needs to adopt TypeScript 7 RC without breaking the existing tsc-based build flow or forcing a hard switch away from TypeScript 6 compatibility.
What changed
- Switched the TypeScript dependency to the Microsoft-recommended alias-based layout so the existing typescript entry remains compatible with TypeScript 6 while a separate typescript-7 alias exposes the RC compiler.
- Kept the project’s existing build entry points intact by preserving the default tsc workflow for the current toolchain.
- Updated TypeScript project configs to remove deprecated baseUrl usage and use explicit relative path aliases, which are required for the new compiler to parse the config cleanly.

{
  "devDependencies": {
    "typescript": "npm:@typescript/typescript6@^6.0.0",
    "typescript-7": "npm:typescript@rc"
  }
}

Co-authored-by: pethers <1726836+pethers@users.noreply.github.com>

github-actions · 2026-07-08T10:54:49Z

🏷️ Automatic Labeling Summary

This PR has been automatically labeled based on the files changed and PR metadata.

Applied Labels: dependencies,size-l

Label Categories

🗳️ Content: news, dashboard, visualization, intelligence
💻 Technology: html-css, javascript, workflow, security
📊 Data: cia-data, riksdag-data, data-pipeline, schema
🌍 I18n: i18n, translation, rtl
🔒 ISMS: isms, iso-27001, nist-csf, cis-controls
🏗️ Infrastructure: ci-cd, deployment, performance, monitoring
🔄 Quality: testing, accessibility, documentation, refactor
🤖 AI: agent, skill, agentic-workflow

For more information, see .github/labeler.yml.

github-actions · 2026-07-08T10:55:55Z

🔍 Lighthouse Performance Audit

Category	Score	Status
Performance	85/100	🟡
Accessibility	95/100	🟢
Best Practices	90/100	🟢
SEO	95/100	🟢

📥 Download full Lighthouse report

Budget Compliance: Performance budgets enforced via budget.json

Copilot

Pull request overview

This PR attempts to let the repo evaluate the TypeScript 7 RC alongside the existing TypeScript 6 toolchain by adding an RC dependency alias and adjusting TypeScript project configs (notably removing baseUrl and making paths entries explicitly relative).

Changes:

Updated devDependencies to keep TS6 as the primary typescript dependency while adding a typescript-7 alias for the RC compiler.
Removed baseUrl from TypeScript configs and adjusted paths mappings to use explicit ./-prefixed targets.
Updated package-lock.json to include the new alias dependency graph (including TS7 RC optional platform packages).

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
tsconfig.typedoc.json	Removes `baseUrl` from the typedoc TypeScript config.
tsconfig.scripts.json	Removes `baseUrl` and updates `paths` entries for script/test compilation.
tsconfig.npm-scripts.json	Removes `baseUrl` and updates `paths` entries for npm-published scripts compilation.
package.json	Adds alias-based TS6 + TS7 RC devDependencies.
package-lock.json	Locks the new dependency set, including TS7 RC platform optional dependencies.

    "ignoreDeprecations": "6.0",
-    "baseUrl": ".",
    "paths": {
-      "@scripts/*": ["scripts/*"],
-      "@types/*": ["scripts/types/*"]
+      "@scripts/*": ["./scripts/*"],
+      "@types/*": ["./scripts/types/*"]
    },


    "ignoreDeprecations": "6.0",
-    "baseUrl": ".",
    "paths": {
-      "@scripts/*": ["scripts/*"],
-      "@types/*": ["scripts/types/*"]
+      "@scripts/*": ["./scripts/*"],
+      "@types/*": ["./scripts/types/*"]
    },


+    "typescript": "npm:@typescript/typescript6@^6.0.0",
+    "typescript-7": "npm:typescript@rc",


    "typedoc": "0.28.20",
    "typedoc-plugin-mdn-links": "5.1.1",
-    "typescript": "6.0.3",
+    "typescript": "npm:@typescript/typescript6@^6.0.0",


Co-authored-by: pethers <1726836+pethers@users.noreply.github.com>

github-actions · 2026-07-08T11:39:24Z

🔍 Lighthouse Performance Audit

Category	Score	Status
Performance	85/100	🟡
Accessibility	95/100	🟢
Best Practices	90/100	🟢
SEO	95/100	🟢

📥 Download full Lighthouse report

Budget Compliance: Performance budgets enforced via budget.json

Co-authored-by: pethers <1726836+pethers@users.noreply.github.com>

github-actions · 2026-07-08T11:52:08Z

🔍 Lighthouse Performance Audit

Category	Score	Status
Performance	85/100	🟡
Accessibility	95/100	🟢
Best Practices	90/100	🟢
SEO	95/100	🟢

📥 Download full Lighthouse report

Budget Compliance: Performance budgets enforced via budget.json

pethers · 2026-07-08T12:34:40Z

@copilot analyse and fix all issues in

Knip Dead Code Check / Run Knip (pull_request)
Knip Dead Code Check / Run Knip (pull_request)Failing after 1m
Quality Checks / typescript-lint (pull_request)
Quality Checks / typescript-lint (pull_request)Failing after 1m
TypeScript & JavaScript Testing / Build Test (Vite) (pull_request)
TypeScript & JavaScript Testing / Build Test (Vite) (pull_request)Failing after 1m
TypeScript & JavaScript Testing / Node.js Nightly Compat (pull_request)
TypeScript & JavaScript Testing / Node.js Nightly Compat (pull_request)Failing after 59s
TypeScript & JavaScript Testing / Unit Tests (Vitest) (pull_request)
TypeScript & JavaScript Testing / Unit Tests (Vitest) (pull_request)Failing after 1m

Co-authored-by: pethers <1726836+pethers@users.noreply.github.com>

Copilot · 2026-07-08T12:57:25Z

@copilot analyse and fix all issues in

[Knip Dead Code Check / Run Knip (pull_request)](https://github.com/Hack23/riksdagsmonitor/actions/runs/28940319518/job/85860642964?p...

Implemented the CI-side fix in commit dea53ea by switching the remaining workflow type-check steps to the explicit TS6 compiler path, matching the earlier package.json/tsconfig changes. I also validated the browser/scripts typechecks and build:lib locally with the same compiler path.

github-actions · 2026-07-08T12:57:58Z

🔍 Lighthouse Performance Audit

Category	Score	Status
Performance	85/100	🟡
Accessibility	95/100	🟢
Best Practices	90/100	🟢
SEO	95/100	🟢

📥 Download full Lighthouse report

Budget Compliance: Performance budgets enforced via budget.json

github-actions · 2026-07-08T12:59:28Z

🔍 Lighthouse Performance Audit

Category	Score	Status
Performance	85/100	🟡
Accessibility	95/100	🟢
Best Practices	90/100	🟢
SEO	95/100	🟢

📥 Download full Lighthouse report

Budget Compliance: Performance budgets enforced via budget.json

pethers · 2026-07-08T14:35:07Z

@copilot also investigate and fix
Knip Dead Code Check / Run Knip (pull_request)
Knip Dead Code Check / Run Knip (pull_request)Failing after 1m

Co-authored-by: pethers <1726836+pethers@users.noreply.github.com>

Copilot · 2026-07-08T14:39:51Z

@copilot also investigate and fix
Knip Dead Code Check / Run Knip (pull_request)...

Fixed in commit 89262ba by adding the intentionally installed typescript-7 RC alias to Knip’s ignored dev dependencies, which removes the dead-code failure without changing the side-by-side toolchain behavior. I also verified the change locally with npx knip and npm run build:lib.

github-actions · 2026-07-08T14:42:23Z

🔍 Lighthouse Performance Audit

Category	Score	Status
Performance	85/100	🟡
Accessibility	95/100	🟢
Best Practices	90/100	🟢
SEO	95/100	🟢

📥 Download full Lighthouse report

Budget Compliance: Performance budgets enforced via budget.json

Copilot AI and others added 2 commits July 8, 2026 10:48

Make TS config compatible with TypeScript 7 RC

807c7be

Co-authored-by: pethers <1726836+pethers@users.noreply.github.com>

Verify TypeScript 7 RC build compatibility

dad3da9

Co-authored-by: pethers <1726836+pethers@users.noreply.github.com>

Copilot AI assigned Copilot and pethers Jul 8, 2026

Copilot created this pull request from a session on behalf of pethers July 8, 2026 10:53 View session

pethers marked this pull request as ready for review July 8, 2026 10:53

Copilot AI review requested due to automatic review settings July 8, 2026 10:53

Copilot started reviewing on behalf of pethers July 8, 2026 10:54 View session

github-actions Bot added dependencies Dependency updates size-l Large change (250-1000 lines) labels Jul 8, 2026

Copilot AI reviewed Jul 8, 2026

View reviewed changes

Copilot started work on behalf of pethers July 8, 2026 11:23 View session

Pin dependency versions and refresh docs

ce6815d

Co-authored-by: pethers <1726836+pethers@users.noreply.github.com>

Pin dependency versions and update TypeScript migration docs

dda91c3

Co-authored-by: pethers <1726836+pethers@users.noreply.github.com>

github-actions Bot added the documentation Documentation updates label Jul 8, 2026

Copilot finished work on behalf of pethers July 8, 2026 12:15

Copilot AI requested a review from pethers July 8, 2026 12:15

Copilot started work on behalf of pethers July 8, 2026 12:35 View session

Pin TypeScript 6 compiler path and valid tsconfig baseUrl

a6dc080

Co-authored-by: pethers <1726836+pethers@users.noreply.github.com>

github-actions Bot added workflow GitHub Actions workflows ci-cd CI/CD pipeline changes testing Test coverage labels Jul 8, 2026

Use the explicit TS6 compiler in nightly workflow checks

dea53ea

Co-authored-by: pethers <1726836+pethers@users.noreply.github.com>

github-actions Bot added the size-xs Extra small change (< 10 lines) label Jul 8, 2026

Copilot finished work on behalf of pethers July 8, 2026 12:58

Copilot started work on behalf of pethers July 8, 2026 14:35 View session

Allow Knip to ignore the TypeScript 7 RC alias dependency

89262ba

Co-authored-by: pethers <1726836+pethers@users.noreply.github.com>

Copilot finished work on behalf of pethers July 8, 2026 14:40

pethers merged commit ecb23aa into main Jul 8, 2026
21 checks passed

pethers deleted the copilot/typescript-7-0-rc-side-by-side-install branch July 8, 2026 15:00

		"typescript": "npm:@typescript/typescript6@^6.0.0",
		"typescript-7": "npm:typescript@rc",

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