{
  "schemaVersion": 1,
  "generatedAt": "2026-08-26T12:41:08.813Z",
  "benchmarks": [
    {
      "id": "lint-js-eslint-biome-2026-08",
      "slug": "eslint-vs-biome-javascript-lint",
      "category": "Code quality",
      "title": "ESLint vs Biome",
      "deck": "Four equivalent rule classes over nearly 100,000 lines of JavaScript.",
      "publishedAt": "2026-08-26",
      "unit": "ms",
      "lowerIsBetter": true,
      "verdict": {
        "winnerId": "biome",
        "headline": "Biome finished 1.4x faster",
        "summary": "Biome took 75.2 ms at the median. ESLint took 105.6 ms on the same warmed corpus."
      },
      "corpus": {
        "name": "ESLint 9.34.0 library source",
        "source": "node_modules/eslint/lib/**/*.js",
        "files": 391,
        "lines": 99880,
        "bytes": 2732670
      },
      "environment": {
        "machine": "MacBook Pro",
        "chip": "Apple M2 Max",
        "cores": "12 CPU cores",
        "memory": "96 GB",
        "os": "macOS 26.5.2",
        "arch": "arm64",
        "runtime": "Bun 1.4.0"
      },
      "protocol": {
        "warmups": 3,
        "runs": 20,
        "processModel": "A new CLI process for every measured pass",
        "cacheState": "Warm filesystem cache after three unmeasured passes",
        "output": "Diagnostics produced and redirected away from the terminal"
      },
      "ruleMap": [
        {
          "intent": "Unused variables",
          "eslint": "no-unused-vars",
          "biome": "correctness/noUnusedVariables"
        },
        {
          "intent": "Strict equality",
          "eslint": "eqeqeq",
          "biome": "suspicious/noDoubleEquals"
        },
        {
          "intent": "Debugger statements",
          "eslint": "no-debugger",
          "biome": "suspicious/noDebugger"
        },
        {
          "intent": "Prefer const",
          "eslint": "prefer-const",
          "biome": "style/useConst"
        }
      ],
      "candidates": [
        {
          "id": "eslint",
          "name": "ESLint",
          "version": "9.34.0",
          "statistics": {
            "medianMs": 105.6,
            "meanMs": 106.0,
            "minMs": 103.5,
            "maxMs": 108.9
          },
          "samplesMs": [
            108.8,
            105.9,
            107.2,
            107.5,
            105.2,
            105.5,
            105.2,
            104.6,
            104.2,
            108.9,
            108.7,
            103.5,
            104.9,
            106.4,
            106.9,
            105.4,
            105.9,
            105.6,
            105.6,
            104.8
          ],
          "logo": "/logos/eslint.svg",
          "homepage": "https://eslint.org",
          "color": "#4B32C3"
        },
        {
          "id": "biome",
          "name": "Biome",
          "version": "2.2.2",
          "statistics": {
            "medianMs": 75.2,
            "meanMs": 75.4,
            "minMs": 71.5,
            "maxMs": 79.6
          },
          "samplesMs": [
            75.1,
            74.0,
            73.6,
            72.1,
            75.3,
            78.7,
            79.6,
            78.5,
            79.4,
            76.3,
            77.8,
            76.2,
            74.6,
            75.4,
            72.8,
            75.6,
            74.8,
            72.5,
            75.1,
            71.5
          ],
          "logo": "/logos/biome.svg",
          "homepage": "https://biomejs.dev",
          "color": "#60A5FA"
        }
      ],
      "limitations": [
        "This isolates lint throughput. It does not score rule coverage, editor integrations, migration cost, or ecosystem compatibility.",
        "The paired rules express the same intent, but their implementations and exact diagnostics are not identical.",
        "The corpus is ESLint's own JavaScript source and may not represent a typical application repository."
      ]
    }
  ],
  "queue": [
    {
      "category": "Caches",
      "title": "Redis vs Dragonfly vs KeyDB",
      "question": "Throughput, tail latency, memory pressure",
      "status": "Planned"
    },
    {
      "category": "Bundlers",
      "title": "Vite vs esbuild vs tsup",
      "question": "Cold builds, rebuilds, output weight",
      "status": "Planned"
    },
    {
      "category": "Desktop",
      "title": "Tauri vs Electron",
      "question": "Startup, idle memory, artifact size",
      "status": "Planned"
    },
    {
      "category": "Web maps",
      "title": "MapLibre vs Mapbox",
      "question": "Frame time, memory, visual parity",
      "status": "Planned"
    },
    {
      "category": "Tile servers",
      "title": "Martin vs BBOX",
      "question": "Cold starts, throughput, operations",
      "status": "Planned"
    }
  ]
}