Add vitest benchmark (#583)

* add basic benches

* add package.json script

* fix header

* add codspeed plugin

* add benchmark GitHub action

* add env

* revert change

* merge upstream

* update names

10 files changed, 447 insertions, 3 deletions

diff --git a/.eslintrc.json b/.eslintrc.json
index fbb47626..156b35b5 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -17,7 +17,8 @@
         "project": [
             "./jsconfig.json",
             "./dev/jsconfig.json",
-            "./test/jsconfig.json"
+            "./test/jsconfig.json",
+            "./benches/jsconfig.json"
         ]
     },
     "env": {
diff --git a/.github/workflows/bench.yml b/.github/workflows/bench.yml
new file mode 100644
index 00000000..e2a44837
--- /dev/null
+++ b/.github/workflows/bench.yml
@@ -0,0 +1,32 @@
+name: Performance Benchmarks
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+  merge_group:
+  workflow_dispatch:
+jobs:
+  benchmark:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup node
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: "package.json"
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build Libs
+        run: npm run build-libs
+
+      - name: Run Benchmarks
+        uses: CodSpeedHQ/action@v2
+        with:
+          token: ${{ secrets.CODSPEED_TOKEN }}
+          run: npm run bench
diff --git a/benches/jsconfig.json b/benches/jsconfig.json
new file mode 100644
index 00000000..8b821d68
--- /dev/null
+++ b/benches/jsconfig.json
@@ -0,0 +1,43 @@
+{
+    "compilerOptions": {
+        "module": "ES2022",
+        "target": "ES2022",
+        "checkJs": true,
+        "moduleResolution": "node",
+        "strict": true,
+        "strictNullChecks": true,
+        "noImplicitAny": true,
+        "strictPropertyInitialization": true,
+        "suppressImplicitAnyIndexErrors": false,
+        "skipLibCheck": false,
+        "baseUrl": ".",
+        "paths": {
+            "*": ["../types/ext/*"],
+            "dev/*": ["../types/dev/*"],
+            "benches/*": ["../types/benches/*"],
+            "rollup/parseAst": ["../types/other/rollup-parse-ast"],
+            "ext/json-schema": ["../types/ext/json-schema"],
+            "json-schema": ["json-schema"]
+        },
+        "types": [
+            "chrome",
+            "firefox-webext-browser",
+            "handlebars",
+            "jszip",
+            "parse5",
+            "wanakana"
+        ]
+    },
+    "include": [
+        "**/*.js",
+        "../ext/**/*.js",
+        "../types/ext/**/*.ts",
+        "../types/dev/**/*.ts",
+        "../types/benches/**/*.ts",
+        "../types/other/globals.d.ts"
+    ],
+    "exclude": [
+        "../node_modules",
+        "../dev/lib"
+    ]
+}
diff --git a/benches/language-transformer.bench.js b/benches/language-transformer.bench.js
new file mode 100644
index 00000000..9d312fb7
--- /dev/null
+++ b/benches/language-transformer.bench.js
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2023-2024  Yomitan Authors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import fs from 'fs';
+import {fileURLToPath} from 'node:url';
+import path from 'path';
+import {bench, describe} from 'vitest';
+import {parseJson} from '../dev/json.js';
+import {LanguageTransformer} from '../ext/js/language/language-transformer.js';
+
+const dirname = path.dirname(fileURLToPath(import.meta.url));
+
+/** @type {import('language-transformer').LanguageTransformDescriptor} */
+const descriptor = parseJson(fs.readFileSync(path.join(dirname, '..', 'ext', 'data/language/japanese-transforms.json'), {encoding: 'utf8'}));
+const languageTransformer = new LanguageTransformer();
+languageTransformer.addDescriptor(descriptor);
+
+describe('Language transformer basic tests', () => {
+    const adjectiveInflections = [
+        '愛しい',
+        '愛しそう',
+        '愛しすぎる',
+        '愛しかったら',
+        '愛しかったり',
+        '愛しくて',
+        '愛しく',
+        '愛しくない',
+        '愛しさ',
+        '愛しかった',
+        '愛しくありません',
+        '愛しくありませんでした',
+        '愛しき'
+    ];
+
+    const verbInflections = [
+        '食べる',
+        '食べます',
+        '食べた',
+        '食べました',
+        '食べて',
+        '食べられる',
+        '食べられる',
+        '食べさせる',
+        '食べさせられる',
+        '食べろ',
+        '食べない',
+        '食べません',
+        '食べなかった',
+        '食べませんでした',
+        '食べなくて',
+        '食べられない',
+        '食べられない',
+        '食べさせない',
+        '食べさせられない',
+        '食べ',
+        '食べれば',
+        '食べちゃう',
+        '食べちまう',
+        '食べなさい',
+        '食べそう',
+        '食べすぎる',
+        '食べたい',
+        '食べたら',
+        '食べたり',
+        '食べず',
+        '食べぬ',
+        '食べ',
+        '食べましょう',
+        '食べよう',
+        '食べとく',
+        '食べている',
+        '食べておる',
+        '食べてる',
+        '食べとる',
+        '食べてしまう'
+    ];
+
+    const inflectionCombinations = [
+        '抱き抱えていなければ',
+        '抱きかかえていなければ',
+        '打ち込んでいませんでした',
+        '食べさせられたくなかった'
+    ];
+
+    bench('transformations', () => {
+        for (const transform of [...adjectiveInflections, ...verbInflections, ...inflectionCombinations]) {
+            languageTransformer.transform(transform);
+        }
+    });
+});
diff --git a/package-lock.json b/package-lock.json
index 1473fe65..3fd30bb1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,6 +17,7 @@
                 "wanakana": "^5.3.1"
             },
             "devDependencies": {
+                "@codspeed/vitest-plugin": "^3.1.0",
                 "@playwright/test": "^1.39.0",
                 "@stylistic/eslint-plugin-ts": "^1.5.1",
                 "@stylistic/stylelint-plugin": "^2.0.0",
@@ -304,6 +305,113 @@
             "integrity": "sha512-0hYQ8SB4Db5zvZB4axdMHGwEaQjkZzFjQiN9LVYvIFB2nSUHW9tYpxWriPrWDASIxiaXax83REcLxuSdnGPZtw==",
             "dev": true
         },
+        "node_modules/@codspeed/core": {
+            "version": "3.1.0",
+            "resolved": "https://registry.npmjs.org/@codspeed/core/-/core-3.1.0.tgz",
+            "integrity": "sha512-oYd7X46QhnRkgRbZkqAoX9i3Fwm17FpunK4Ee5RdrvRYR0Xr93ewH8/O5g6uyTPDOOqDEv1v2KRYtWhVgN+2VQ==",
+            "dev": true,
+            "dependencies": {
+                "axios": "^1.4.0",
+                "find-up": "^6.3.0",
+                "form-data": "^4.0.0",
+                "node-gyp-build": "^4.6.0"
+            }
+        },
+        "node_modules/@codspeed/core/node_modules/find-up": {
+            "version": "6.3.0",
+            "resolved": "https://registry.npmjs.org/find-up/-/find-up-6.3.0.tgz",
+            "integrity": "sha512-v2ZsoEuVHYy8ZIlYqwPe/39Cy+cFDzp4dXPaxNvkEuouymu+2Jbz0PxpKarJHYJTmv2HWT3O382qY8l4jMWthw==",
+            "dev": true,
+            "dependencies": {
+                "locate-path": "^7.1.0",
+                "path-exists": "^5.0.0"
+            },
+            "engines": {
+                "node": "^12.20.0 || ^14.13.1 || >=16.0.0"
+            },
+            "funding": {
+                "url": "https://github.com/sponsors/sindresorhus"
+            }
+        },
+        "node_modules/@codspeed/core/node_modules/locate-path": {
+            "version": "7.2.0",
+            "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-7.2.0.tgz",
+            "integrity": "sha512-gvVijfZvn7R+2qyPX8mAuKcFGDf6Nc61GdvGafQsHL0sBIxfKzA+usWn4GFC/bk+QdwPUD4kWFJLhElipq+0VA==",
+            "dev": true,
+            "dependencies": {
+                "p-locate": "^6.0.0"
+            },
+            "engines": {
+                "node": "^12.20.0 || ^14.13.1 || >=16.0.0"
+            },
+            "funding": {
+                "url": "https://github.com/sponsors/sindresorhus"
+            }
+        },
+        "node_modules/@codspeed/core/node_modules/p-limit": {
+            "version": "4.0.0",
+            "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-4.0.0.tgz",
+            "integrity": "sha512-5b0R4txpzjPWVw/cXXUResoD4hb6U/x9BH08L7nw+GN1sezDzPdxeRvpc9c433fZhBan/wusjbCsqwqm4EIBIQ==",
+            "dev": true,
+            "dependencies": {
+                "yocto-queue": "^1.0.0"
+            },
+            "engines": {
+                "node": "^12.20.0 || ^14.13.1 || >=16.0.0"
+            },
+            "funding": {
+                "url": "https://github.com/sponsors/sindresorhus"
+            }
+        },
+        "node_modules/@codspeed/core/node_modules/p-locate": {
+            "version": "6.0.0",
+            "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-6.0.0.tgz",
+            "integrity": "sha512-wPrq66Llhl7/4AGC6I+cqxT07LhXvWL08LNXz1fENOw0Ap4sRZZ/gZpTTJ5jpurzzzfS2W/Ge9BY3LgLjCShcw==",
+            "dev": true,
+            "dependencies": {
+                "p-limit": "^4.0.0"
+            },
+            "engines": {
+                "node": "^12.20.0 || ^14.13.1 || >=16.0.0"
+            },
+            "funding": {
+                "url": "https://github.com/sponsors/sindresorhus"
+            }
+        },
+        "node_modules/@codspeed/core/node_modules/path-exists": {
+            "version": "5.0.0",
+            "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-5.0.0.tgz",
+            "integrity": "sha512-RjhtfwJOxzcFmNOi6ltcbcu4Iu+FL3zEj83dk4kAS+fVpTxXLO1b38RvJgT/0QwvV/L3aY9TAnyv0EOqW4GoMQ==",
+            "dev": true,
+            "engines": {
+                "node": "^12.20.0 || ^14.13.1 || >=16.0.0"
+            }
+        },
+        "node_modules/@codspeed/core/node_modules/yocto-queue": {
+            "version": "1.0.0",
+            "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-1.0.0.tgz",
+            "integrity": "sha512-9bnSc/HEW2uRy67wc+T8UwauLuPJVn28jb+GtJY16iiKWyvmYJRXVT4UamsAEGQfPohgr2q4Tq0sQbQlxTfi1g==",
+            "dev": true,
+            "engines": {
+                "node": ">=12.20"
+            },
+            "funding": {
+                "url": "https://github.com/sponsors/sindresorhus"
+            }
+        },
+        "node_modules/@codspeed/vitest-plugin": {
+            "version": "3.1.0",
+            "resolved": "https://registry.npmjs.org/@codspeed/vitest-plugin/-/vitest-plugin-3.1.0.tgz",
+            "integrity": "sha512-ms11tUytiQTgB+idxZRUuCUQfgz4LaKTDJCLYm5VTSpOCUU7D5+QWvJnA8X8B9glPfR5siIK8RxrnZP4yuysKQ==",
+            "dev": true,
+            "dependencies": {
+                "@codspeed/core": "^3.1.0"
+            },
+            "peerDependencies": {
+                "vite": "^4.2.0 || ^5.0.0",
+                "vitest": ">=1.2.2"
+            }
+        },
         "node_modules/@csstools/css-parser-algorithms": {
             "version": "2.5.0",
             "resolved": "https://registry.npmjs.org/@csstools/css-parser-algorithms/-/css-parser-algorithms-2.5.0.tgz",
@@ -2009,6 +2117,17 @@
                 "node": ">= 4.5.0"
             }
         },
+        "node_modules/axios": {
+            "version": "1.6.7",
+            "resolved": "https://registry.npmjs.org/axios/-/axios-1.6.7.tgz",
+            "integrity": "sha512-/hDJGff6/c7u0hDkvkGxR/oy6CbCs8ziCsC7SqmhjfozqiJGc8Z11wrv9z9lYfY4K8l+H9TpjcMDX0xOZmx+RA==",
+            "dev": true,
+            "dependencies": {
+                "follow-redirects": "^1.15.4",
+                "form-data": "^4.0.0",
+                "proxy-from-env": "^1.1.0"
+            }
+        },
         "node_modules/balanced-match": {
             "version": "1.0.2",
             "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
@@ -3225,6 +3344,26 @@
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             "dev": true
         },
+        "node_modules/follow-redirects": {
+            "version": "1.15.5",
+            "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.5.tgz",
+            "integrity": "sha512-vSFWUON1B+yAw1VN4xMfxgn5fTUiaOzAJCKBwIIgT/+7CuGy9+r+5gITvP62j3RmaD5Ph65UaERdOSRGUzZtgw==",
+            "dev": true,
+            "funding": [
+                {
+                    "type": "individual",
+                    "url": "https://github.com/sponsors/RubenVerborgh"
+                }
+            ],
+            "engines": {
+                "node": ">=4.0"
+            },
+            "peerDependenciesMeta": {
+                "debug": {
+                    "optional": true
+                }
+            }
+        },
         "node_modules/foreground-child": {
             "version": "3.1.1",
             "resolved": "https://registry.npmjs.org/foreground-child/-/foreground-child-3.1.1.tgz",
@@ -4720,6 +4859,17 @@
                 "tslib": "^2.0.3"
             }
         },
+        "node_modules/node-gyp-build": {
+            "version": "4.8.0",
+            "resolved": "https://registry.npmjs.org/node-gyp-build/-/node-gyp-build-4.8.0.tgz",
+            "integrity": "sha512-u6fs2AEUljNho3EYTJNBfImO5QTo/J/1Etd+NVdCj7qWKUSN/bSLkZwhDv7I+w/MSC6qJ4cknepkAYykDdK8og==",
+            "dev": true,
+            "bin": {
+                "node-gyp-build": "bin.js",
+                "node-gyp-build-optional": "optional.js",
+                "node-gyp-build-test": "build-test.js"
+            }
+        },
         "node_modules/normalize-path": {
             "version": "3.0.0",
             "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-3.0.0.tgz",
@@ -5196,6 +5346,12 @@
                 "node": ">=6"
             }
         },
+        "node_modules/proxy-from-env": {
+            "version": "1.1.0",
+            "resolved": "https://registry.npmjs.org/proxy-from-env/-/proxy-from-env-1.1.0.tgz",
+            "integrity": "sha512-D+zkORCbA9f1tdWRK0RaCR3GPv50cMxcrz4X8k5LTSUD1Dkw47mKJEZQNunItRTkWwgtaUSo1RVFRIG9ZXiFYg==",
+            "dev": true
+        },
         "node_modules/psl": {
             "version": "1.9.0",
             "resolved": "https://registry.npmjs.org/psl/-/psl-1.9.0.tgz",
@@ -7088,6 +7244,78 @@
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             "dev": true
         },
+        "@codspeed/core": {
+            "version": "3.1.0",
+            "resolved": "https://registry.npmjs.org/@codspeed/core/-/core-3.1.0.tgz",
+            "integrity": "sha512-oYd7X46QhnRkgRbZkqAoX9i3Fwm17FpunK4Ee5RdrvRYR0Xr93ewH8/O5g6uyTPDOOqDEv1v2KRYtWhVgN+2VQ==",
+            "dev": true,
+            "requires": {
+                "axios": "^1.4.0",
+                "find-up": "^6.3.0",
+                "form-data": "^4.0.0",
+                "node-gyp-build": "^4.6.0"
+            },
+            "dependencies": {
+                "find-up": {
+                    "version": "6.3.0",
+                    "resolved": "https://registry.npmjs.org/find-up/-/find-up-6.3.0.tgz",
+                    "integrity": "sha512-v2ZsoEuVHYy8ZIlYqwPe/39Cy+cFDzp4dXPaxNvkEuouymu+2Jbz0PxpKarJHYJTmv2HWT3O382qY8l4jMWthw==",
+                    "dev": true,
+                    "requires": {
+                        "locate-path": "^7.1.0",
+                        "path-exists": "^5.0.0"
+                    }
+                },
+                "locate-path": {
+                    "version": "7.2.0",
+                    "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-7.2.0.tgz",
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+                    "dev": true,
+                    "requires": {
+                        "p-locate": "^6.0.0"
+                    }
+                },
+                "p-limit": {
+                    "version": "4.0.0",
+                    "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-4.0.0.tgz",
+                    "integrity": "sha512-5b0R4txpzjPWVw/cXXUResoD4hb6U/x9BH08L7nw+GN1sezDzPdxeRvpc9c433fZhBan/wusjbCsqwqm4EIBIQ==",
+                    "dev": true,
+                    "requires": {
+                        "yocto-queue": "^1.0.0"
+                    }
+                },
+                "p-locate": {
+                    "version": "6.0.0",
+                    "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-6.0.0.tgz",
+                    "integrity": "sha512-wPrq66Llhl7/4AGC6I+cqxT07LhXvWL08LNXz1fENOw0Ap4sRZZ/gZpTTJ5jpurzzzfS2W/Ge9BY3LgLjCShcw==",
+                    "dev": true,
+                    "requires": {
+                        "p-limit": "^4.0.0"
+                    }
+                },
+                "path-exists": {
+                    "version": "5.0.0",
+                    "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-5.0.0.tgz",
+                    "integrity": "sha512-RjhtfwJOxzcFmNOi6ltcbcu4Iu+FL3zEj83dk4kAS+fVpTxXLO1b38RvJgT/0QwvV/L3aY9TAnyv0EOqW4GoMQ==",
+                    "dev": true
+                },
+                "yocto-queue": {
+                    "version": "1.0.0",
+                    "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-1.0.0.tgz",
+                    "integrity": "sha512-9bnSc/HEW2uRy67wc+T8UwauLuPJVn28jb+GtJY16iiKWyvmYJRXVT4UamsAEGQfPohgr2q4Tq0sQbQlxTfi1g==",
+                    "dev": true
+                }
+            }
+        },
+        "@codspeed/vitest-plugin": {
+            "version": "3.1.0",
+            "resolved": "https://registry.npmjs.org/@codspeed/vitest-plugin/-/vitest-plugin-3.1.0.tgz",
+            "integrity": "sha512-ms11tUytiQTgB+idxZRUuCUQfgz4LaKTDJCLYm5VTSpOCUU7D5+QWvJnA8X8B9glPfR5siIK8RxrnZP4yuysKQ==",
+            "dev": true,
+            "requires": {
+                "@codspeed/core": "^3.1.0"
+            }
+        },
         "@csstools/css-parser-algorithms": {
             "version": "2.5.0",
             "resolved": "https://registry.npmjs.org/@csstools/css-parser-algorithms/-/css-parser-algorithms-2.5.0.tgz",
@@ -8150,6 +8378,17 @@
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             "dev": true
         },
+        "axios": {
+            "version": "1.6.7",
+            "resolved": "https://registry.npmjs.org/axios/-/axios-1.6.7.tgz",
+            "integrity": "sha512-/hDJGff6/c7u0hDkvkGxR/oy6CbCs8ziCsC7SqmhjfozqiJGc8Z11wrv9z9lYfY4K8l+H9TpjcMDX0xOZmx+RA==",
+            "dev": true,
+            "requires": {
+                "follow-redirects": "^1.15.4",
+                "form-data": "^4.0.0",
+                "proxy-from-env": "^1.1.0"
+            }
+        },
         "balanced-match": {
             "version": "1.0.2",
             "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
@@ -9022,6 +9261,12 @@
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             "dev": true
         },
+        "follow-redirects": {
+            "version": "1.15.5",
+            "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.5.tgz",
+            "integrity": "sha512-vSFWUON1B+yAw1VN4xMfxgn5fTUiaOzAJCKBwIIgT/+7CuGy9+r+5gITvP62j3RmaD5Ph65UaERdOSRGUzZtgw==",
+            "dev": true
+        },
         "foreground-child": {
             "version": "3.1.1",
             "resolved": "https://registry.npmjs.org/foreground-child/-/foreground-child-3.1.1.tgz",
@@ -10085,6 +10330,12 @@
                 "tslib": "^2.0.3"
             }
         },
+        "node-gyp-build": {
+            "version": "4.8.0",
+            "resolved": "https://registry.npmjs.org/node-gyp-build/-/node-gyp-build-4.8.0.tgz",
+            "integrity": "sha512-u6fs2AEUljNho3EYTJNBfImO5QTo/J/1Etd+NVdCj7qWKUSN/bSLkZwhDv7I+w/MSC6qJ4cknepkAYykDdK8og==",
+            "dev": true
+        },
         "normalize-path": {
             "version": "3.0.0",
             "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-3.0.0.tgz",
@@ -10397,6 +10648,12 @@
                 }
             }
         },
+        "proxy-from-env": {
+            "version": "1.1.0",
+            "resolved": "https://registry.npmjs.org/proxy-from-env/-/proxy-from-env-1.1.0.tgz",
+            "integrity": "sha512-D+zkORCbA9f1tdWRK0RaCR3GPv50cMxcrz4X8k5LTSUD1Dkw47mKJEZQNunItRTkWwgtaUSo1RVFRIG9ZXiFYg==",
+            "dev": true
+        },
         "psl": {
             "version": "1.9.0",
             "resolved": "https://registry.npmjs.org/psl/-/psl-1.9.0.tgz",
diff --git a/package.json b/package.json
index 0f8e82cd..c4dc2dd8 100644
--- a/package.json
+++ b/package.json
@@ -10,6 +10,7 @@
     },
     "type": "module",
     "scripts": {
+        "bench": "vitest bench",
         "build": "node ./dev/bin/build.js",
         "build-libs": "node ./dev/bin/build-libs.js",
         "test": "npm run test-lint-js && npm run test-ts && npm run test-lint-css && npm run test-lint-html && npm run test-code && npm run test-build",
@@ -46,6 +47,7 @@
         "sourceDir": "ext"
     },
     "devDependencies": {
+        "@codspeed/vitest-plugin": "^3.1.0",
         "@playwright/test": "^1.39.0",
         "@stylistic/eslint-plugin-ts": "^1.5.1",
         "@stylistic/stylelint-plugin": "^2.0.0",
diff --git a/test/data/json.json b/test/data/json.json
index fe7df57d..1f664587 100644
--- a/test/data/json.json
+++ b/test/data/json.json
@@ -23,6 +23,7 @@
         {"path": "test/data/dictionaries/invalid-dictionary6/index.json", "ignore": true},
         {"path": "test/jsconfig.json", "ignore": true},
         {"path": "test/data/vitest.write.config.json", "ignore": true},
+        {"path": "benches/jsconfig.json", "ignore": true},
 
         {
             "path": "dev/data/manifest-variants.json",
@@ -184,4 +185,4 @@
             "schema": "ext/data/schemas/dictionary-term-meta-bank-v3-schema.json"
         }
     ]
-}
\ No newline at end of file
+}
diff --git a/test/json.test.js b/test/json.test.js
index 54c33c34..0689913a 100644
--- a/test/json.test.js
+++ b/test/json.test.js
@@ -36,6 +36,7 @@ function getJsconfigPath(jsconfigType) {
     switch (jsconfigType) {
         case 'dev': path = '../dev/jsconfig.json'; break;
         case 'test': path = '../test/jsconfig.json'; break;
+        case 'benches': path = '../benches/jsconfig.json'; break;
         default: path = '../jsconfig.json'; break;
     }
     return join(dirname, path);
diff --git a/types/test/json.d.ts b/types/test/json.d.ts
index 1b4fb919..d08f9fb0 100644
--- a/types/test/json.d.ts
+++ b/types/test/json.d.ts
@@ -39,4 +39,4 @@ export type JsonFileParseInfo = {
 
 export type AjvSchema = Schema;
 
-export type JsconfigType = 'main' | 'dev' | 'test';
+export type JsconfigType = 'main' | 'dev' | 'test' | 'benches';
diff --git a/vitest.config.js b/vitest.config.js
index e0e72e63..7603e92c 100644
--- a/vitest.config.js
+++ b/vitest.config.js
@@ -14,9 +14,12 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
+
+import codspeedPlugin from '@codspeed/vitest-plugin';
 import {configDefaults, defineConfig} from 'vitest/config';
 
 export default defineConfig({
+    plugins: [codspeedPlugin()],
     test: {
         exclude: [
             ...configDefaults.exclude,