chore(deps-dev): upgrade TypeScript to 6.0.3

[jimmyandrade]

Summary

Proposed changes

This PR supersedes #611 and brings the following changes:

• Upgrade typescript from 5.9.3 to 6.0.3.
• Migrate tsconfig.json from deprecated moduleResolution: "Node" (node10) to moduleResolution: "bundler" + module: "commonjs", per the TypeScript 6 migration guide.
• Set module: "esnext" in the Rollup TypeScript plugin so bundling stays compatible with @rollup/plugin-typescript.
• Type Promise<GlyphData> chains in glyphsData.ts for stricter inference under TS 6.
• Keep noImplicitAny: false and strictNullChecks: false explicitly during the TS 6 transition (same effective strictness as before under node10).

Related issue

Supersedes #611 (Dependabot TypeScript bump).

Dependencies added/removed (if applicable)

• Update: typescript 5.9.3 → 6.0.3.

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Testing

• I have added or updated tests that prove my fix is effective or that my feature works (if applicable)
  • Unit test — existing suite passes unchanged

How to test

1. Run npm test — build, lint, declaration emit, and all 67 Jest tests pass.
2. Confirm postbuild (tsc --emitDeclarationOnly) no longer fails with TS5107 on moduleResolution=node10.

Test configuration

• Node.js version (if applicable): 26.4.0
• NPM version (if applicable): (project default)

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Checklist

• I have added corresponding labels to this PR (like bug, enhancement...);
• My commits follow the Conventional Commits 1.0 Guidelines;
• My code follows the style guidelines of this project;
• I have performed a self-review of my own code;
• I have mapped technical debts found on my changes;
• I have made changes to the documentation (if applicable);
• My changes generate no new warnings or errors;

Made with Cursor

[Copilot]

Pull request overview

Upgrades the project’s TypeScript toolchain to TS 6.0.3 and adjusts compilation/bundling settings and a couple of promise typings to keep builds and type inference working under TS 6.

Changes:

• Bump typescript devDependency from 5.9.3 to 6.0.3 (and lockfile updates).
• Update tsconfig.json compiler options related to module resolution/output.
• Add explicit Promise<GlyphData> typings and set Rollup TS plugin module override to keep Rollup output compatible.

Reviewed changes

Copilot reviewed 3 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tsconfig.json	Updates module/moduleResolution and explicit strictness toggles for TS 6 transition.
src/standalone/glyphsData.ts	Adds explicit Promise/result typings to stabilize inference under TS 6.
rollup.config.js	Overrides TS compiler module for the Rollup TypeScript plugin.
package.json	Updates typescript to 6.0.3.
package-lock.json	Lockfile updates to reflect the TypeScript bump.

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