chore: remove unused downlevel-dts (#11034)

* chore: remove unused downlevel-dts

* check in lockfile change too

* Also remove typesVersions

* Apply suggestions from code review

Co-authored-by: Arya Emami <[email protected]>

* more rimraf and _ts

---------

Co-authored-by: Arya Emami <[email protected]>

Author: JoshuaKGoldberg

.gitignore

@@ -73,17 +73,10 @@ jspm_packages/
 .DS_Store
 .idea
 dist
-_ts3.4
-_ts4.2
 *.tsbuildinfo
 .watchmanconfig
 .rollup.cache
 
-# the downlevel-dts output folders
-_ts3.4
-_ts4.2
-_ts4.3
-
 # Files copied as part of the build
 packages/types/src/generated/**/*.ts
 

package.json

@@ -93,7 +93,6 @@
     "console-fail-test": "^0.5.0",
     "cross-fetch": "^4.0.0",
     "cspell": "^8.15.2",
-    "downlevel-dts": ">=0.11.0",
     "eslint": "^9.15.0",
     "eslint-plugin-eslint-plugin": "^6.3.1",
     "eslint-plugin-import": "^2.31.0",

packages/parser/package.json

@@ -5,7 +5,6 @@
   "files": [
     "dist",
     "!*.tsbuildinfo",
-    "_ts4.3",
     "README.md",
     "LICENSE"
   ],
@@ -41,9 +40,8 @@
   ],
   "scripts": {
     "build": "tsc -b tsconfig.build.json",
-    "postbuild": "downlevel-dts dist _ts4.3/dist --to=4.3",
     "clean": "tsc -b tsconfig.build.json --clean",
-    "postclean": "rimraf dist/ _ts4.3/ coverage/",
+    "postclean": "rimraf dist/ coverage/",
     "format": "prettier --write \"./**/*.{ts,mts,cts,tsx,js,mjs,cjs,jsx,json,md,css}\" --ignore-path ../../.prettierignore",
     "lint": "npx nx lint",
     "test": "vitest --run --config=$INIT_CWD/vitest.config.mts",
@@ -62,7 +60,6 @@
   },
   "devDependencies": {
     "@vitest/coverage-v8": "^3.1.1",
-    "downlevel-dts": "*",
     "glob": "*",
     "prettier": "^3.2.5",
     "rimraf": "*",
@@ -72,12 +69,5 @@
   "funding": {
     "type": "opencollective",
     "url": "https://opencollective.com/typescript-eslint"
-  },
-  "typesVersions": {
-    "<4.7": {
-      "*": [
-        "_ts4.3/*"
-      ]
-    }
   }
 }

packages/rule-tester/package.json

@@ -5,7 +5,6 @@
   "files": [
     "dist",
     "!*.tsbuildinfo",
-    "_ts4.2",
     "README.md",
     "LICENSE"
   ],
@@ -37,9 +36,8 @@
   ],
   "scripts": {
     "build": "tsc -b tsconfig.build.json",
-    "postbuild": "downlevel-dts dist _ts4.2/dist --to=4.2",
     "clean": "tsc -b tsconfig.build.json --clean",
-    "postclean": "rimraf dist && rimraf _ts3.4 && rimraf coverage",
+    "postclean": "rimraf dist/ coverage/",
     "format": "prettier --write \"./**/*.{ts,mts,cts,tsx,js,mjs,cjs,jsx,json,md,css}\" --ignore-path ../../.prettierignore",
     "lint": "npx nx lint",
     "pretest-eslint-base": "tsc -b tsconfig.build.json",
@@ -79,12 +77,5 @@
   },
   "publishConfig": {
     "access": "public"
-  },
-  "typesVersions": {
-    "<3.8": {
-      "*": [
-        "_ts3.4/*"
-      ]
-    }
   }
 }

packages/scope-manager/package.json

@@ -64,12 +64,5 @@
   "funding": {
     "type": "opencollective",
     "url": "https://opencollective.com/typescript-eslint"
-  },
-  "typesVersions": {
-    "<4.7": {
-      "*": [
-        "_ts4.3/*"
-      ]
-    }
   }
 }

packages/scope-manager/project.json

@@ -7,15 +7,11 @@
   "targets": {
     "build": {
       "executor": "nx:run-commands",
-      "outputs": ["{projectRoot}/dist", "{projectRoot}/_ts4.3"],
+      "outputs": ["{projectRoot}/dist"],
       "options": {
         "parallel": false,
         "cwd": "packages/scope-manager",
-        "commands": [
-          "rimraf _ts4.3",
-          "tsc -b tsconfig.build.json",
-          "downlevel-dts dist _ts4.3/dist --to=4.3"
-        ]
+        "commands": ["tsc -b tsconfig.build.json"]
       }
     },
     "clean": {
@@ -26,7 +22,6 @@
         "commands": [
           "tsc -b tsconfig.build.json --clean",
           "rimraf dist",
-          "rimraf _ts4.3",
           "rimraf coverage"
         ]
       }

packages/type-utils/package.json

@@ -5,7 +5,6 @@
   "files": [
     "dist",
     "!*.tsbuildinfo",
-    "_ts4.3",
     "package.json",
     "README.md",
     "LICENSE"
@@ -38,9 +37,8 @@
   ],
   "scripts": {
     "build": "tsc -b tsconfig.build.json",
-    "postbuild": "downlevel-dts dist _ts4.3/dist --to=4.3",
     "clean": "tsc -b tsconfig.build.json --clean",
-    "postclean": "rimraf dist/ _ts4.3/ coverage/",
+    "postclean": "rimraf dist/ coverage/",
     "format": "prettier --write \"./**/*.{ts,mts,cts,tsx,js,mjs,cjs,jsx,json,md,css}\" --ignore-path ../../.prettierignore",
     "lint": "npx nx lint",
     "test": "vitest --run --config=$INIT_CWD/vitest.config.mts",
@@ -60,7 +58,6 @@
     "@typescript-eslint/parser": "8.29.1",
     "@vitest/coverage-v8": "^3.1.1",
     "ajv": "^6.12.6",
-    "downlevel-dts": "*",
     "prettier": "^3.2.5",
     "rimraf": "*",
     "typescript": "*",
@@ -69,12 +66,5 @@
   "funding": {
     "type": "opencollective",
     "url": "https://opencollective.com/typescript-eslint"
-  },
-  "typesVersions": {
-    "<4.7": {
-      "*": [
-        "_ts4.3/*"
-      ]
-    }
   }
 }

packages/types/package.json

@@ -5,7 +5,6 @@
   "files": [
     "dist",
     "!*.tsbuildinfo",
-    "_ts4.3",
     "package.json",
     "README.md",
     "LICENSE"
@@ -40,9 +39,8 @@
   "scripts": {
     "copy-ast-spec": "tsx ./tools/copy-ast-spec.mts",
     "build": "tsc -b tsconfig.build.json",
-    "postbuild": "downlevel-dts dist _ts4.3/dist --to=4.3",
     "clean": "tsc -b tsconfig.build.json --clean",
-    "postclean": "rimraf dist && rimraf src/generated && rimraf _ts3.4 && rimraf _ts4.3 && rimraf coverage",
+    "postclean": "rimraf dist/ src/generated/ coverage/",
     "format": "prettier --write \"./**/*.{ts,mts,cts,tsx,js,mjs,cjs,jsx,json,md,css}\" --ignore-path ../../.prettierignore",
     "generate-lib": "npx nx run scope-manager:generate-lib",
     "lint": "npx nx lint",
@@ -68,7 +66,6 @@
     }
   },
   "devDependencies": {
-    "downlevel-dts": "*",
     "prettier": "^3.2.5",
     "rimraf": "*",
     "tsx": "*",
@@ -77,12 +74,5 @@
   "funding": {
     "type": "opencollective",
     "url": "https://opencollective.com/typescript-eslint"
-  },
-  "typesVersions": {
-    "<4.7": {
-      "*": [
-        "_ts4.3/*"
-      ]
-    }
   }
 }

packages/typescript-eslint/package.json

@@ -5,7 +5,6 @@
   "files": [
     "dist",
     "!*.tsbuildinfo",
-    "_ts4.3",
     "README.md",
     "LICENSE"
   ],
@@ -44,9 +43,8 @@
   ],
   "scripts": {
     "build": "tsc -b tsconfig.build.json",
-    "postbuild": "downlevel-dts dist _ts4.3/dist --to=4.3",
     "clean": "tsc -b tsconfig.build.json --clean",
-    "postclean": "rimraf dist/ _ts4.3/ coverage/",
+    "postclean": "rimraf dist/ coverage/",
     "format": "prettier --write \"./**/*.{ts,mts,cts,tsx,js,mjs,cjs,jsx,json,md,css}\" --ignore-path ../../.prettierignore",
     "lint": "nx lint",
     "test": "vitest --run --config=$INIT_CWD/vitest.config.mts",
@@ -63,7 +61,6 @@
   },
   "devDependencies": {
     "@vitest/coverage-v8": "^3.1.1",
-    "downlevel-dts": "*",
     "prettier": "^3.2.5",
     "rimraf": "*",
     "typescript": "*",
@@ -72,12 +69,5 @@
   "funding": {
     "type": "opencollective",
     "url": "https://opencollective.com/typescript-eslint"
-  },
-  "typesVersions": {
-    "<4.7": {
-      "*": [
-        "_ts4.3/*"
-      ]
-    }
   }
 }

packages/typescript-estree/package.json

@@ -5,7 +5,6 @@
   "files": [
     "dist",
     "!*.tsbuildinfo",
-    "_ts4.3",
     "README.md",
     "LICENSE"
   ],
@@ -46,9 +45,8 @@
   ],
   "scripts": {
     "build": "tsc -b tsconfig.build.json",
-    "postbuild": "downlevel-dts dist _ts4.3/dist --to=4.3",
     "clean": "tsc -b tsconfig.build.json --clean",
-    "postclean": "rimraf dist && rimraf _ts4.3 && rimraf coverage",
+    "postclean": "rimraf dist/ coverage/",
     "format": "prettier --write \"./**/*.{ts,mts,cts,tsx,js,mjs,cjs,jsx,json,md,css}\" --ignore-path ../../.prettierignore",
     "lint": "npx nx lint",
     "test": "jest --runInBand --verbose",
@@ -79,12 +77,5 @@
   "funding": {
     "type": "opencollective",
     "url": "https://opencollective.com/typescript-eslint"
-  },
-  "typesVersions": {
-    "<4.7": {
-      "*": [
-        "_ts4.3/*"
-      ]
-    }
   }
 }

packages/utils/package.json

@@ -5,7 +5,6 @@
   "files": [
     "dist",
     "!*.tsbuildinfo",
-    "_ts4.3",
     "package.json",
     "README.md",
     "LICENSE"
@@ -55,9 +54,8 @@
   ],
   "scripts": {
     "build": "tsc -b tsconfig.build.json",
-    "postbuild": "downlevel-dts dist _ts4.3/dist --to=4.3",
     "clean": "tsc -b tsconfig.build.json --clean",
-    "postclean": "rimraf dist/ _ts4.3/ coverage/",
+    "postclean": "rimraf dist/ coverage/",
     "format": "prettier --write \"./**/*.{ts,mts,cts,tsx,js,mjs,cjs,jsx,json,md,css}\" --ignore-path ../../.prettierignore",
     "lint": "npx nx lint",
     "test": "vitest --run --config=$INIT_CWD/vitest.config.mts",
@@ -84,12 +82,5 @@
   "funding": {
     "type": "opencollective",
     "url": "https://opencollective.com/typescript-eslint"
-  },
-  "typesVersions": {
-    "<4.7": {
-      "*": [
-        "_ts4.3/*"
-      ]
-    }
   }
 }

packages/visitor-keys/package.json

@@ -5,7 +5,6 @@
   "files": [
     "dist",
     "!*.tsbuildinfo",
-    "_ts4.3",
     "package.json",
     "README.md",
     "LICENSE"
@@ -39,9 +38,8 @@
   ],
   "scripts": {
     "build": "tsc -b tsconfig.build.json",
-    "postbuild": "downlevel-dts dist _ts4.3/dist --to=4.3",
     "clean": "tsc -b tsconfig.build.json --clean",
-    "postclean": "rimraf dist/ _ts4.3/ coverage/",
+    "postclean": "rimraf dist/ coverage/",
     "format": "prettier --write \"./**/*.{ts,mts,cts,tsx,js,mjs,cjs,jsx,json,md,css}\" --ignore-path ../../.prettierignore",
     "lint": "npx nx lint",
     "test": "vitest --run --config=$INIT_CWD/vitest.config.mts",
@@ -53,7 +51,6 @@
   },
   "devDependencies": {
     "@vitest/coverage-v8": "^3.1.1",
-    "downlevel-dts": "*",
     "prettier": "^3.2.5",
     "rimraf": "*",
     "typescript": "*",
@@ -62,12 +59,5 @@
   "funding": {
     "type": "opencollective",
     "url": "https://opencollective.com/typescript-eslint"
-  },
-  "typesVersions": {
-    "<4.7": {
-      "*": [
-        "_ts4.3/*"
-      ]
-    }
   }
 }