test: run every test for every supported minor version of TypeScript …

…to ensure stability across versions

package.json

@@ -17,7 +17,7 @@
 		"preversion": "npm run lint && NODE_ENV=production pnpm run build",
 		"version": "pnpm run generate:all && git add .",
 		"release": "np --no-cleanup --no-yarn",
-		"update": "npx npm-check-updates -u && pnpm update && pnpm install"
+		"update": "pnpx npm-check-updates -u -x np --dep dev,prod && pnpm update && pnpm install"
 	},
 	"keywords": [
 		"typescript",
@@ -43,42 +43,54 @@
 	],
 	"license": "MIT",
 	"devDependencies": {
-		"@typescript-eslint/eslint-plugin": "^2.21.0",
-		"@typescript-eslint/parser": "^2.21.0",
-		"@wessberg/rollup-plugin-ts": "^1.2.18",
-		"@wessberg/scaffold": "^1.0.25",
-		"@wessberg/ts-config": "^1.0.8",
-		"ava": "^3.4.0",
-		"eslint": "^6.8.0",
-		"eslint-config-prettier": "^6.10.0",
-		"eslint-plugin-import": "^2.20.1",
-		"eslint-plugin-jsdoc": "^21.0.0",
+		"@typescript-eslint/eslint-plugin": "^3.8.0",
+		"@typescript-eslint/parser": "^3.8.0",
+		"@wessberg/rollup-plugin-ts": "^1.3.2",
+		"@wessberg/scaffold": "^1.0.30",
+		"@wessberg/ts-config": "^1.0.16",
+		"@types/semver": "^7.3.1",
+		"ava": "^3.11.1",
+		"eslint": "^7.6.0",
+		"eslint-config-prettier": "^6.11.0",
+		"eslint-plugin-import": "^2.22.0",
+		"eslint-plugin-jsdoc": "^30.2.1",
 		"find-up": "^4.1.0",
-		"husky": "^4.2.3",
+		"husky": "^4.2.5",
 		"np": "5.2.1",
-		"pnpm": "^4.10.0",
-		"prettier": "^1.19.1",
+		"pnpm": "^5.4.12",
+		"prettier": "^2.0.5",
 		"pretty-quick": "^2.0.1",
-		"rollup": "^1.32.0",
-		"standard-changelog": "^2.0.21",
-		"ts-node": "^8.6.2",
-		"typescript": "^3.8.3",
+		"rimraf": "^3.0.2",
+		"rollup": "^2.23.1",
 		"slash": "^3.0.0",
-		"rimraf": "^3.0.2"
+		"semver": "7.3.2",
+		"standard-changelog": "^2.0.24",
+		"ts-node": "^8.10.2",
+		"typescript": "4.0.0-beta",
+		"typescript-3-0-1": "npm:typescript@3.0.1",
+		"typescript-3-1-1": "npm:typescript@3.1.1",
+		"typescript-3-2-1": "npm:typescript@3.2.1",
+		"typescript-3-3-1": "npm:typescript@3.3.1",
+		"typescript-3-4-1": "npm:typescript@3.4.1",
+		"typescript-3-5-1": "npm:typescript@3.5.1",
+		"typescript-3-6-2": "npm:typescript@3.6.2",
+		"typescript-3-7-2": "npm:typescript@3.7.2",
+		"typescript-3-8-3": "npm:typescript@3.8.3",
+		"typescript-3-9-2": "npm:typescript@3.9.2"
 	},
 	"dependencies": {
-		"@types/node": "^13.7.7",
+		"@types/node": "^14.0.27",
 		"@types/object-path": "^0.11.0",
-		"chalk": "^3.0.0",
+		"chalk": "^4.1.0",
 		"object-path": "^0.11.4",
-		"tslib": "^1.11.1"
+		"tslib": "^2.0.1"
 	},
 	"peerDependencies": {
 		"typescript": "^3.x"
 	},
 	"optionalDependencies": {
-		"@types/jsdom": "^16.1.0",
-		"jsdom": "^16.2.0"
+		"@types/jsdom": "^16.2.3",
+		"jsdom": "^16.3.0"
 	},
 	"main": "./dist/cjs/index.js",
 	"module": "./dist/esm/index.js",
@@ -105,7 +117,7 @@
 			"test/**/**.test.ts"
 		],
 		"verbose": true,
-		"timeout": "40s",
+		"timeout": "300s",
 		"extensions": [
 			"ts"
 		],