Set tests concurrency using the TEST_THREADS environment variable

package.json

@@ -6,22 +6,21 @@
   "version": "2.20.0",
   "private": true,
   "scripts": {
-    "start": "cross-env TZ=UTC yarn babel index.js",
+    "start": "TZ=UTC yarn babel index.js",
     "travis": "run-s -c typecheck test lint",
-    "test": "run-s typecheck reset-test-db test-rollback mocha-p",
+    "test": "run-s typecheck reset-test-db test-rollback test-all",
     "coverage": "run-s reset-test-db nyc",
     "lint": "run-s eslint ejslint",
     "ejslint": "ejslint app",
     "eslint": "eslint . --ext \".js,.jsx,.ts\"",
     "babel": "node -r './esm/register.cjs'",
     "typecheck": "tsc",
-    "reset-test-db": "run-s \"babel bin/reset_test_db.js --schemas=4\"",
+    "reset-test-db": "run-s \"babel bin/reset_test_db.js --schemas ${TEST_THREADS:-1}\"",
     "test-rollback": "knex --env test migrate:rollback && knex --env test migrate:latest",
-    "test-just": "cross-env NODE_ENV=test FRFS_SECRET=test-secret mocha",
-    "mocha": "cross-env TZ=UTC run-s \"test-just -b test/unit test/integration test/functional test/cleanup.js\"",
-    "mocha-p": "cross-env TZ=UTC run-s \"test-just -b -p -j 4 test/unit test/integration test/functional test/cleanup.js\"",
+    "test-just": "NODE_ENV=test FRFS_SECRET=test-secret mocha -p -j ${TEST_THREADS:-1}",
+    "test-all": "TZ=UTC run-s \"test-just -b test/unit test/integration test/functional test/cleanup.js\"",
     "console": "yarn babel bin/console",
-    "nyc": "nyc yarn mocha",
+    "nyc": "nyc yarn test-all",
     "data_transfer": "yarn babel bin/data_transfer",
     "reindex_hashtags": "yarn babel bin/reindex_hashtags",
     "notification_emails": "yarn babel bin/notification_emails",
@@ -146,7 +145,6 @@
     "@typescript-eslint/parser": "~6.19.1",
     "chai": "5.1.0",
     "chai-fs": "~2.0.0",
-    "cross-env": "~7.0.3",
     "ejs-lint": "~2.0.0",
     "esbuild": "~0.20.2",
     "eslint": "~8.56.0",

yarn.lock

@@ -4238,18 +4238,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"cross-env@npm:~7.0.3":
-  version: 7.0.3
-  resolution: "cross-env@npm:7.0.3"
-  dependencies:
-    cross-spawn: "npm:^7.0.1"
-  bin:
-    cross-env: src/bin/cross-env.js
-    cross-env-shell: src/bin/cross-env-shell.js
-  checksum: f3765c25746c69fcca369655c442c6c886e54ccf3ab8c16847d5ad0e91e2f337d36eedc6599c1227904bf2a228d721e690324446876115bc8e7b32a866735ecf
-  languageName: node
-  linkType: hard
-
 "cross-spawn@npm:^4.0.0":
   version: 4.0.2
   resolution: "cross-spawn@npm:4.0.2"
@@ -4284,7 +4272,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"cross-spawn@npm:^7.0.0, cross-spawn@npm:^7.0.1, cross-spawn@npm:^7.0.2, cross-spawn@npm:^7.0.3":
+"cross-spawn@npm:^7.0.0, cross-spawn@npm:^7.0.2, cross-spawn@npm:^7.0.3":
   version: 7.0.3
   resolution: "cross-spawn@npm:7.0.3"
   dependencies:
@@ -6213,7 +6201,6 @@ __metadata:
     commander: "npm:~11.1.0"
     config: "npm:~3.3.11"
     console-stamp: "npm:~3.1.2"
-    cross-env: "npm:~7.0.3"
     debug: "npm:~4.3.4"
     ejs: "npm:~3.1.10"
     ejs-lint: "npm:~2.0.0"