chore: add preinstall script

- Bump package version from 0.1.1 to 0.1.2 in package-lock.json.
- Add a preinstall script to build the project and types before installation.
- Remove obsolete type definition files for plugin, matrix utilities, and worker.
- linked issue Exclude sourcemap (.map) files from published npm package to reduce package size
- Fixes #12

Author: kalwalt

.gitignore

@@ -18,6 +18,12 @@ pids
 # Directory for instrumented libs generated by jscoverage/JSCover
 lib-cov
 
+# Sourcemap files
+dist/**/*.map
+types/**/*.map
+dist/*
+types/*
+
 # Coverage directory used by tools like istanbul
 coverage
 *.lcov

.npmignore

@@ -18,6 +18,11 @@ test/
 coverage/
 .nyc_output/
 *.log
+dist/*
+dist/**/*.map
+*.map
+
+types/*
 
 # configs (opzionale)
 .eslintrc*

README.md

@@ -307,4 +307,12 @@ The example demonstrates:
 - No detections:
   - Confirm camera started, correct marker pattern, sufficient lighting
   - Adjust `minConfidence` to reduce/raise filtering
+
   - Check `plugin.version` (if 'unknown', ensure build-time define is configured)
+
+## Build & Publishing Notes
+
+- Sourcemap files (`.map`) generated in `dist/` and `types/` are excluded from the repository and the npm package to reduce package size and avoid shipping debug artifacts.
+  - See `.gitignore` and `.npmignore` for details.
+- When installing the package with `npm install`, the libraries are automatically built thanks to the `preinstall` script in `package.json`.
+  - This ensures all required files are always generated and ready to use.