test: add angular test matrix

[Orkuncakilkaya]

This PR solves INTER-2234

CI/CD Improvements:

• Added a new GitHub Actions workflow (.github/workflows/test-matrix.yml) to run tests across Angular versions 15–21, each paired with the appropriate Node.js version, enhancing automated compatibility checks.

Node.js Version Management:

• Added a .node-version file specifying Node.js version 18 for local development consistency.
• Updated package.json to require Node.js version 18 or higher using the engines field, ensuring developers use a compatible Node.js version.

Development Tooling:

• Updated linting scripts in package.json to include .mjs files in addition to .js and .ts, improving code quality checks for modern JavaScript modules.
• Added a test:matrix script to package.json to facilitate running matrix tests locally or in CI.

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟡	Statements	75%	30/40
🟡	Branches	60%	3/5
🟢	Functions	83.33%	5/6
🟡	Lines	72.97%	27/37

Test suite run success

10 tests passing in 2 suites.

Report generated by 🧪jest coverage report action from ed5b65b

Show full coverage report

St	File	% Stmts	% Branch	% Funcs	% Lines	Uncovered Line #s
🟡	All files	75	60	83.33	72.97
🔴	src	0	100	100	0
🔴	public-api.ts	0	100	100	0	5-13
🟢	src/lib	93.33	60	100	92.59
🟢	fingerprint.module.ts	100	100	100	100
🟢	fingerprint.providers.ts	100	100	100	100
🟢	fingerprint.service.ts	89.47	60	100	88.88	57,64
🟢	version.ts	100	100	100	100
🟡	src/lib/tokens	66.66	100	0	66.66
🟡	fingerprint-angular-settings-token.ts	66.66	100	0	66.66	7

[Copilot]

Pull request overview

Adds an Angular version test matrix to validate the library across Angular 15–21, with supporting Node/pnpm configuration for CI and local test execution.

Changes:

• Adds a GitHub Actions workflow for Angular matrix testing.
• Adds a local bin/test-matrix.sh helper script with similar matrix logic.
• Updates Node/test configuration and ignores generated test artifacts.

Reviewed changes

Copilot reviewed 4 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
.github/workflows/test-matrix.yml	Adds PR workflow to build and test the library across Angular versions.
bin/test-matrix.sh	Adds local shell script for running the same Angular matrix.
package.json	Adds Node engine requirement.
.node-version	Sets the repository Node version to 22.
.gitignore	Ignores pnpm store and matrix test logs.
projects/fingerprintjs-pro-angular/tsconfig.spec.json	Adds Node types for specs.

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 20 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 20 changed files in this pull request and generated no new comments.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 21 changed files in this pull request and generated no new comments.

[TheUnderScorer]

Looks good, I think the JS approach is way more readable compared to bash, so thanks for working on this!

One more suggestion: currently, the version matrix lives in two places - in the test-matrix.yml and in the constants.mjs. Perhaps we could introduce a single source of truth with a mapping of specific Node.js <-> Angular versions and use it in both places?

[github-actions]

⚠️ This PR doesn't contain any changesets. If there are user-facing changes, don't forget to run:

pnpm exec changeset

to create a changeset.

[JuroUhlar]

Some CI checks still seem to fail, otherwise LGTM, thanks!