Update test commands (#1205)

* As per @yun Feng: everyone has npm installed globally but maybe not yarn

* Add command to enable test result updating

* Default to running tests HEADLESS on rrweb

* Add command to build:all in a low memory environment

* Add a 'retest' command for when the code hasn't changed, but you are working on the test cases

* Add commands to reformat according to prettier. Named 'reformat' to indicate that we are doing a `--write`

* Update package.json

Co-authored-by: Yun Feng <yun.feng0817@gmail.com>

* Apply suggestions from code review

Co-authored-by: Yun Feng <yun.feng0817@gmail.com>

* Create few-turkeys-reflect.md

* Apply formatting changes

---------

Co-authored-by: Justin Halsall <Juice10@users.noreply.github.com>
Co-authored-by: Yun Feng <yun.feng0817@gmail.com>

.changeset/few-turkeys-reflect.md

@@ -0,0 +1,2 @@
+---
+---

README.md

@@ -64,8 +64,9 @@ Since we want the record and replay sides to share a strongly typed data structu
 2. Run `yarn install` in the root to install required dependencies for all sub-packages (note: `npm install` is _not_ recommended).
 3. Run `yarn dev` in the root to get auto-building for all the sub-packages whenever you modify anything.
 4. Navigate to one of the sub-packages (in the `packages` folder) where you'd like to make a change.
-5. Patch the code and run `yarn test` to run the tests, make sure they pass before you commit anything.
-6. Push the code and create a pull request.
+5. Patch the code and run `yarn test` to run the tests, make sure they pass before you commit anything. Add test cases in order to avoid future regression.
+6. If tests are failing, but the change in output is desirable, run `yarn test:update` and carefully commit the changes in test output.
+7. Push the code and create a pull request.
 
 Protip: You can run `yarn test` in the root folder to run all the tests.
 

package.json

@@ -36,9 +36,11 @@
     "typescript": "^4.7.3"
   },
   "scripts": {
-    "build:all": "yarn run concurrently --success=all -r -m=1 'yarn workspaces-to-typescript-project-references' 'yarn turbo run prepublish'",
+    "build:all": "NODE_OPTIONS='--max-old-space-size=4096' yarn run concurrently --success=all -r -m=1 'yarn workspaces-to-typescript-project-references' 'yarn turbo run prepublish'",
     "test": "yarn run concurrently --success=all -r -m=1 'yarn workspaces-to-typescript-project-references --check' 'yarn turbo run test'",
     "test:watch": "yarn turbo run test:watch",
+    "test:update": "yarn turbo run test:update",
+    "format": "yarn prettier --write '**/*.{ts,md}'",
     "dev": "yarn turbo run dev",
     "repl": "cd packages/rrweb && npm run repl",
     "live-stream": "cd packages/rrweb && yarn live-stream",

packages/rrweb-snapshot/package.json

@@ -7,11 +7,12 @@
     "prepack": "npm run bundle && npm run typings",
     "test": "jest",
     "test:watch": "jest --watch",
+    "test:update": "jest --updateSnapshot",
     "bundle": "rollup --config",
     "bundle:es-only": "cross-env ES_ONLY=true rollup --config",
     "dev": "yarn bundle:es-only --watch",
     "typings": "tsc -d --declarationDir typings",
-    "prepublish": "npm run typings && npm run bundle",
+    "prepublish": "yarn typings && yarn bundle",
     "lint": "yarn eslint src"
   },
   "type": "module",

packages/rrweb/package.json

@@ -5,10 +5,14 @@
   "scripts": {
     "prepare": "npm run prepack",
     "prepack": "npm run bundle",
-    "test": "npm run bundle:browser && jest --testPathIgnorePatterns test/benchmark",
-    "test:headless": "PUPPETEER_HEADLESS=true npm run test",
-    "test:watch": "PUPPETEER_HEADLESS=true npm run test -- --watch",
-    "repl": "npm run bundle:browser && node scripts/repl.js",
+    "retest": "jest --testPathIgnorePatterns test/benchmark",
+    "build-and-test": "yarn bundle:browser && yarn retest",
+    "test:headless": "PUPPETEER_HEADLESS=true yarn build-and-test",
+    "test:headful": "PUPPETEER_HEADLESS=false yarn build-and-test",
+    "test": "yarn test:headless",
+    "test:watch": "yarn test:headless -- --watch",
+    "test:update": "yarn test:headless -- --updateSnapshot",
+    "repl": "yarn bundle:browser && node scripts/repl.js",
     "live-stream": "yarn bundle:browser && node scripts/stream.js",
     "dev": "yarn bundle:browser --watch",
     "bundle:browser": "cross-env BROWSER_ONLY=true rollup --config",

turbo.json

@@ -10,6 +10,7 @@
     "test:watch": {
       "persistent": true
     },
+    "test:update": {},
     "dev": {
       "dependsOn": ["^prepublish"],
       "persistent": true