test: automatic pre-commit testing (#30)

* also, automatic camelCasing of package names when provided as CLI arguments

README.md

@@ -61,7 +61,7 @@ npm test
 Run test for one or more packages:
 
 ```sh
-npm run test:ts-node -- <packageNameCamelCased_1> [<packageNameCamelCased_2> ...]
+npm run test:ts-node -- <package1> [<package2> ...]
 ```
 
 ## Package management

lint-staged.config.js

@@ -1,4 +1,13 @@
+import camelCase from 'lodash.camelcase'
+
 export default {
+  'packages/*/src/**/*.ts': filenames => {
+    const packages = filenames
+      .map(filename => /packages\/([^/]+)\//.exec(filename)[1])
+      .map(camelCase)
+    // need to build before testing
+    return ['npm run build', `npm run test:ts-node -- ${packages.join(' ')}`]
+  },
   '*.ts': filenames =>
     // only lint changed files
     `npm run lint -- --fix ${filenames.join(' ')}`,

package.json

@@ -16,7 +16,7 @@
     "dev": "npm run webpack -- --mode=development --watch",
     "build": "npm run webpack -- --mode=production",
     "clean": "lerna run clean",
-    "test:ts-node": "node --experimental-specifier-resolution=node --loader ts-node/esm -r ts-node/register ./test.ts",
+    "test:ts-node": "node --experimental-specifier-resolution node --loader ts-node/esm ./test.ts",
     "test": "npm run build && npm run test:ts-node",
     "lerna:version": "lerna version prerelease --no-changelog",
     "lerna:publish": "lerna publish from-package",
@@ -40,6 +40,7 @@
     "@babel/core": "^7.16.12",
     "@babel/preset-env": "^7.16.11",
     "@babel/preset-typescript": "^7.16.7",
+    "@types/lodash.camelcase": "^4.3.7",
     "@types/node": "^18.0.0",
     "@typescript-eslint/eslint-plugin": "~5.30.4",
     "@typescript-eslint/parser": "~5.30.0",
@@ -53,6 +54,7 @@
     "husky": "~8.0.1",
     "lerna": "~5.1.5",
     "lint-staged": "^13.0.2",
+    "lodash.camelcase": "^4.3.0",
     "prettier": "^2.6.2",
     "sql-formatter": "^7.0.2",
     "ts-loader": "~9.3.1",

test.ts

@@ -7,6 +7,8 @@ import {
 import { Experience } from './lib/'
 import * as packages from './packages'
 
+import camelCase from 'lodash.camelcase'
+
 function test([
   name,
   {
@@ -37,15 +39,13 @@ function test([
 if (process.argv.length > 2) {
   // test one or more packages
   const names: string[] = process.argv.slice(2)
-  names.forEach(name => {
+  names.map(camelCase).forEach(name => {
     // we expect the name to be camelCased
     const module = (packages as { [key: string]: Experience })[name]
     if (module) {
       test([name, module])
     } else {
-      throw new Error(`
-The given package name "${name}" does not match a package.
-Make sure the name is camelCased`)
+      throw new Error(`The name "${name}" does not match any package.`)
     }
   })
 } else {