fix: use workspace TypeScript for Astro tsconfig resolution

[TeamInfinixdevcom]

@Sean-Kenneth-Doherty
Thanks for the review — you were right to question the original approach.

Root-Cause Analysis & Resolution

The Issue Was Environment/Editor-Related, Not a Config Bug

The extends: "astro/tsconfigs/strict" reference failed in some editor environments because:

• Editors were using their own bundled TypeScript (often older versions) that don't properly honor package exports mappings for JSON config files
• Without a workspace typescript devDependency, there was no consistent TS version for editors to use

Why This Fix Avoids Portability Issues

Rather than hardcoding a relative path to node_modules/astro/tsconfigs/strict.json, we added typescript as a workspace devDependency. This approach:

• Leverages official Astro conventions (package exports are the recommended approach)
• Ensures editors, CI, and contributors all use the same TypeScript version
• Remains portable across package managers (npm, pnpm, yarn) without coupling to node_modules layout
• Reduces future maintenance burden (no path rewrites if Astro reorganizes internals)

Astro Recommendation Preserved

The config now follows Astro's published best practice: projects should use workspace TypeScript that understands package exports. This is more robust than relative path workarounds.

Verification

• ✅ pnpm build succeeds
• ✅ pnpm exec tsc --showConfig properly resolves merged config (strict mode + JSX settings)

Changes

• Added typescript: ^5.9 as workspace devDependency
• Updated lock file accordingly

[Copilot]

Pull request overview

Adds a workspace-level typescript devDependency so editor/CI TypeScript consistently resolves Astro’s exported astro/tsconfigs/strict config, avoiding failures caused by editors using bundled/older TS versions that don’t fully honor package exports for JSON configs.

Changes:

• Add typescript: ^5.9 to root devDependencies.
• Update pnpm-lock.yaml to lock TypeScript (5.9.3) and reflect the updated peer resolution for Astro and related packages.

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated no comments.

File	Description
package.json	Adds workspace typescript devDependency to standardize TS used by editors/CI.
pnpm-lock.yaml	Locks typescript@5.9.3 and updates dependency graph/metadata accordingly.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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[TeamInfinixdevcom]

concluid