queue.json

{
  "$comment": "Generated by `pnpm packs:queue`: ranked by how many sample repositories (fixtures/corpus.json and scripts/packs-queue-sample.ts, pinned public applications) declare the package directly, weekly downloads breaking ties; packages that upgrade together are one entry named after their hub. Pick one, say so in a pack-request issue, and follow CONTRIBUTING.md, \"Write a pack\".",
  "generated": "2026-10-07",
  "sample": 52,
  "queue": [
    {
      "package": "react",
      "members": ["react", "@types/react", "@types/react-dom", "react-dom", "react-is"],
      "from": ">=18 <19",
      "to": ">=19 <20",
      "why": "declared directly in 48 of 52 sample repositories, 17 of them on an older major; 1645 breaking API changes, 739 distinct (701 removed or renamed, 38 change shapes) from 18.3.1 to 19.3.0 (@types/react 18.3.31 → 19.3.0); upgraded with @types/react, @types/react-dom, react-dom, react-is (released in lockstep, types for react)",
      "status": "verified",
      "repos": 48,
      "reposBehind": 17,
      "weeklyDownloads": 0,
      "codemod": "https://react.dev/blog/2024/04/25/react-19-upgrade-guide (`react/19/migration-recipe` and `types-react-codemod preset-19` cover render, string refs, act and removed types; the guide lists the rest as manual)",
      "breaking": {
        "total": 1645,
        "distinct": 739,
        "guide": 18
      }
    },
    {
      "package": "vitest",
      "members": [
        "vitest",
        "@vitest/browser-playwright",
        "@vitest/coverage-istanbul",
        "@vitest/coverage-v8",
        "@vitest/ui"
      ],
      "from": ">=4 <5",
      "to": ">=5 <6",
      "why": "declared directly in 39 of 52 sample repositories, 31 of them on an older major; 332 breaking API changes, 276 distinct (224 removed or renamed, 52 change shapes) from 4.1.11 to 5.0.3; upgraded with @vitest/browser-playwright, @vitest/coverage-istanbul, @vitest/coverage-v8, @vitest/ui (released in lockstep, shared @vitest/mocker)",
      "status": "verified",
      "repos": 39,
      "reposBehind": 31,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 332,
        "distinct": 276,
        "guide": 34
      }
    },
    {
      "package": "date-fns",
      "members": ["date-fns"],
      "from": ">=3 <4",
      "to": ">=4 <5",
      "why": "declared directly in 39 of 52 sample repositories, 17 of them on an older major; 143 breaking API changes, 123 distinct (5 removed or renamed, 118 change shapes) from 3.6.0 to 4.4.0; counts only the main entry: the diff does not match v4's subpath modules (date-fns/add) yet",
      "status": "blocked",
      "blockedReason": "The v4.0.0 changelog lists only type-level breaking changes (internal types, ESM-first) and no API removals; no public repository was found whose v3 to v4 upgrade needed a source change. Checked 2026-10-11: dust-tt/dust#33915 (no code changes), WordPress/gutenberg#78057 (only a timezone-mock test setup change), Kong/kongponents#3447 (date-fns 2 to 4 plus date-fns-tz removal, not v3). Retry when a public repository with a compiler-visible v3 to v4 migration shows up.",
      "repos": 39,
      "reposBehind": 17,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 143,
        "distinct": 123
      }
    },
    {
      "package": "vite",
      "members": ["vite", "@vitejs/plugin-react", "vite-plugin-inspect"],
      "from": ">=7 <8",
      "to": ">=8 <9",
      "why": "declared directly in 35 of 52 sample repositories, 18 of them on an older major; 49 breaking API changes, 40 distinct (6 removed or renamed, 34 change shapes) from 7.3.7 to 8.3.3; upgraded with @vitejs/plugin-react, vite-plugin-inspect (plugin of vite)",
      "status": "blocked",
      "blockedReason": "Real public Vite 7 to 8 migrations exist but none can be scored with the current engine. Checked 2026-10-12: outline/outline (upgrade da68359; the pinned parent 9e87fcf declares vite as npm:rolldown-vite@7.3.1, an alias, so `check vite` answers 'not a dependency' and packs:truth cannot link the target under that name), lobehub/lobe-chat (upgrade 31d76cc; no lockfile Uptide supports at the pinned parent 9a03c18, so the ground-truth install fails with UNSUPPORTED_PACKAGE_MANAGER), microsoft/teams.ts (#874 upgrades vite 6 to 8, outside the >=7 <8 range). Other Vite 8 upgrades found (photonia-io/photonia#1135, climateinteractive/SDEverywhere#919) are small, not popular repositories. Retry when the engine resolves npm: aliases of a package and installs repositories without a supported lockfile, or when a popular public repository with a plain vite 7.x to 8 upgrade and a supported lockfile shows up.",
      "repos": 35,
      "reposBehind": 18,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 49,
        "distinct": 40,
        "guide": 14
      }
    },
    {
      "package": "recharts",
      "members": ["recharts"],
      "from": ">=2 <3",
      "to": ">=3 <4",
      "why": "declared directly in 20 of 52 sample repositories, 14 of them on an older major; 688 breaking API changes, 659 distinct (590 removed or renamed, 69 change shapes) from 2.15.4 to 3.10.1",
      "status": "todo",
      "repos": 20,
      "reposBehind": 14,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 688,
        "distinct": 659,
        "guide": 4
      }
    },
    {
      "package": "ioredis",
      "members": ["ioredis"],
      "from": ">=5 <6",
      "to": ">=6 <7",
      "why": "declared directly in 24 of 52 sample repositories, 22 of them on an older major; 976 breaking API changes, 191 distinct (1 removed or renamed, 190 change shapes) from 5.11.1 to 6.0.0",
      "status": "blocked",
      "blockedReason": "A candidate pack is in the tree (packages/core/src/packs/ioredis, RESEARCH.md), scored against five public merged upgrades: ferni-ai/voiceai (c6838d5), syzygyhack/open-foundry (a466e0d), simondietschi/dokunc (#15, c475390), safe-global/safe-client-gateway (#3409, 80135d2), kazumadev619-dev/FishingConditionsApp (#235, cdecc03). It has no breaking false positive, but cannot reach verified: ioredis 6 keeps v5 reply shapes and types for default clients and removes no command, so none of the five upgrades has a compiler diagnostic or another breaking site to predict; their source changes are connection-default decisions (protocol: 2, the v5 retryStrategy, the HELLO 3 AUTH redaction test), which are behavior notes. The one breaking compile error found (bullmq 5 bundling its own ioredis 5, elie222/inbox-zero) disappears in a real install because that workspace forces one ioredis copy, and its upgrade also moved bullmq 5 to 6, a separate major. Checked 2026-10-14. Retry when a public upgrade has a breaking ioredis 6 site (a bundled-copy type error fixed in the commit, a subscriber mode check, a connect listener with enableOfflineQueue: false), or when the gate can count behavior-note findings.",
      "repos": 24,
      "reposBehind": 22,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 976,
        "distinct": 191
      }
    },
    {
      "package": "lucide-react",
      "members": ["lucide-react"],
      "from": ">=0 <1",
      "to": ">=1 <2",
      "why": "declared directly in 27 of 52 sample repositories, 21 of them on an older major; 7587 breaking API changes, 102 distinct (92 removed or renamed, 10 change shapes) from 0.577.0 to 1.52.0",
      "status": "verified",
      "repos": 27,
      "reposBehind": 21,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 7587,
        "distinct": 102
      }
    },
    {
      "package": "@sentry/core",
      "members": [
        "@sentry/core",
        "@sentry/browser",
        "@sentry/nestjs",
        "@sentry/nextjs",
        "@sentry/node",
        "@sentry/profiling-node",
        "@sentry/react"
      ],
      "from": ">=10 <11",
      "to": ">=11 <12",
      "why": "declared directly in 22 of 52 sample repositories, 21 of them on an older major; 295 breaking API changes, 289 distinct (266 removed or renamed, 23 change shapes) from 10.76.1 to 11.5.0; upgraded with @sentry/browser, @sentry/nestjs, @sentry/nextjs, @sentry/node, @sentry/profiling-node, @sentry/react (@sentry released in lockstep, @sentry/nextjs re-exports @sentry/core, @sentry/react re-exports @sentry/core, @sentry/node re-exports @sentry/core, @sentry/nestjs re-exports @sentry/core, @sentry/profiling-node re-exports @sentry/core, @sentry/browser re-exports @sentry/core)",
      "status": "in-progress",
      "note": "Packs are keyed on the SDK a repository declares, built from packages/core/src/packs/sentry (RESEARCH.md). Verified: @sentry/nextjs (3 public repositories), @sentry/browser (2) and @sentry/react (2). @sentry/node has reviewed ground truth (pack sentry-node, not registered) and is held back by TS7006 errors inside an option the target removed, which are not folded into that option's site. Checked 2026-10-14.",
      "repos": 22,
      "reposBehind": 21,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 295,
        "distinct": 289,
        "guide": 98
      }
    },
    {
      "package": "@prisma/client",
      "members": ["@prisma/client", "@prisma/adapter-pg", "@prisma/instrumentation"],
      "from": ">=6 <7",
      "to": ">=7 <8",
      "why": "declared directly in 14 of 52 sample repositories, 8 of them on an older major; 5261 breaking API changes, 4403 distinct (4403 removed or renamed, 0 change shapes) from 6.19.3 to 7.10.0; upgraded with @prisma/adapter-pg, @prisma/instrumentation (@prisma released in lockstep)",
      "status": "todo",
      "repos": 14,
      "reposBehind": 8,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 5261,
        "distinct": 4403,
        "guide": 16
      }
    },
    {
      "package": "@typescript-eslint/utils",
      "members": [
        "@typescript-eslint/utils",
        "@typescript-eslint/eslint-plugin",
        "@typescript-eslint/parser"
      ],
      "from": ">=6 <7",
      "to": ">=8 <9",
      "why": "declared directly in 20 of 52 sample repositories, 8 of them on an older major; 468 breaking API changes, 237 distinct (146 removed or renamed, 91 change shapes) from 6.21.0 to 8.71.1; upgraded with @typescript-eslint/eslint-plugin, @typescript-eslint/parser (@typescript-eslint released in lockstep, @typescript-eslint/eslint-plugin re-exports @typescript-eslint/utils)",
      "status": "todo",
      "repos": 20,
      "reposBehind": 8,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 468,
        "distinct": 237,
        "guide": 7
      }
    },
    {
      "package": "tailwindcss",
      "members": ["tailwindcss"],
      "from": ">=3 <4",
      "to": ">=4 <5",
      "why": "declared directly in 35 of 52 sample repositories, 18 of them on an older major; 8 breaking API changes from 3.4.19 to 4.3.3; type diff understates: the migration guide lists 31 (https://tailwindcss.com/docs/upgrade-guide), scored as 31: Removed @tailwind directives; Removed deprecated utilities; Updated shadow, radius, and blur scales; Renamed outline utility; Default ring width change; Space-between selector; Divide selector; Using variants with gradients; Container configuration; Default border color; Default ring width and color; New default placeholder color; Buttons use the default cursor; Dialog margins removed; Hidden attribute takes priority; Using a prefix; The important modifier; Adding custom utilities; Variant stacking order; Variables in arbitrary values; Arbitrary values in grid and object-position utilities; Hover styles on mobile; Transitioning outline-color; Resetting Transforms; Transitions; Disabling core plugins; Using the theme() function; Using a JavaScript config file; Theme values in JavaScript; Using @apply with Vue, Svelte, or CSS modules; Using Sass, Less, and Stylus",
      "status": "todo",
      "repos": 35,
      "reposBehind": 18,
      "weeklyDownloads": 0,
      "codemod": "https://tailwindcss.com/docs/upgrade-guide (`@tailwindcss/upgrade` converts config to CSS and renames utilities; custom plugins and changed defaults are manual)",
      "breaking": {
        "total": 8,
        "distinct": 8,
        "guide": 31
      }
    },
    {
      "package": "react-day-picker",
      "members": ["react-day-picker"],
      "from": ">=9 <10",
      "to": ">=10 <11",
      "why": "declared directly in 22 of 52 sample repositories, 21 of them on an older major; 134 breaking API changes, 133 distinct (126 removed or renamed, 7 change shapes) from 9.14.0 to 10.0.2",
      "status": "todo",
      "repos": 22,
      "reposBehind": 21,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 134,
        "distinct": 133,
        "guide": 9
      }
    },
    {
      "package": "openai",
      "members": ["openai"],
      "from": ">=4 <5",
      "to": ">=7 <8",
      "why": "declared directly in 16 of 52 sample repositories, 16 of them on an older major; 1299 breaking API changes, 825 distinct (801 removed or renamed, 24 change shapes) from 4.104.0 to 7.30.0",
      "status": "candidate",
      "repos": 16,
      "reposBehind": 16,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 1299,
        "distinct": 825,
        "guide": 18
      }
    },
    {
      "package": "next",
      "members": [
        "next",
        "@next/bundle-analyzer",
        "@next/mdx",
        "@next/third-parties",
        "eslint-config-next"
      ],
      "from": ">=15 <16",
      "to": ">=16 <17",
      "why": "declared directly in 27 of 52 sample repositories, 10 of them on an older major; 75 breaking API changes, 74 distinct (59 removed or renamed, 15 change shapes) from 15.5.27 to 16.4.0; upgraded with @next/bundle-analyzer, @next/mdx, @next/third-parties, eslint-config-next (released in lockstep)",
      "status": "in-progress",
      "repos": 27,
      "reposBehind": 10,
      "weeklyDownloads": 0,
      "codemod": "https://nextjs.org/docs/app/guides/upgrading/version-16 (`@next/codemod upgrade` moves config, middleware to proxy and stabilized APIs; async request APIs and caching changes are reviewed by hand)",
      "breaking": {
        "total": 75,
        "distinct": 74,
        "guide": 15
      }
    },
    {
      "package": "react-router",
      "members": ["react-router", "@types/react-router-dom", "react-router-dom"],
      "from": ">=6 <7",
      "to": ">=7 <8",
      "why": "declared directly in 23 of 52 sample repositories, 21 of them on an older major; 103 breaking API changes, 83 distinct (51 removed or renamed, 32 change shapes) from 6.30.6 to 8.4.0; upgraded with @types/react-router-dom, react-router-dom (react-router-dom re-exports react-router, needs react moved); split 2026-10-14: React Router documents 6 to 8 as two upgrades (the v6 guide exists only in the v7 docs, each guide assumes the previous major's future flags were adopted on that major, and react-router-dom has no 8.x), so this entry is the 6 to 7 pack and 7 to 8 is the next entry; the counts above measure 6.30.6 to 8.4.0",
      "status": "verified",
      "repos": 23,
      "reposBehind": 21,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 103,
        "distinct": 83,
        "guide": 9
      }
    },
    {
      "package": "react-router",
      "members": ["react-router"],
      "from": ">=7 <8",
      "to": ">=8 <9",
      "why": "split from the 6 to 8 entry above: the second upgrade, from the latest 7.x with the v8 future flags adopted on 7 (https://github.com/remix-run/react-router/blob/7ccdcecdd944e15be0cd0dcb702b86c9af1214a8/docs/upgrading/v7.md): react-router-dom removed, React 19.2.7 and Node 22.22 minimums, ESM only, middleware always on (context typed Readonly<RouterContextProvider>), UIMatch.data removed for loaderData, hasErrorBoundary removed, stale future keys rejected from 8.4; not measured separately",
      "status": "todo",
      "repos": 23,
      "reposBehind": 21,
      "weeklyDownloads": 0
    },
    {
      "package": "prettier",
      "members": ["prettier", "eslint-plugin-prettier", "prettier-plugin-svelte"],
      "from": ">=2 <3",
      "to": ">=3 <4",
      "why": "declared directly in 31 of 52 sample repositories, 6 of them on an older major; API change not measured (no type declarations); the migration guide lists 18 (https://prettier.io/blog/2023/07/05/3.0.0.html): Change the default value for `trailingComma` to `all`; Remove Flow syntax support from `babel` parser; Remove support for Flow comments; Print trailing comma in type parameters and tuple types when `--trailing-comma=es5`; Add the pure `css` parser; Drop support for \"comma separated interfaces\" syntax; Change public APIs to asynchronous; Npm package file structures changed; Support plugins in ESM; Update `prettier.doc`; `textToDoc` trims trailing hard lines; Removed support for custom parser api; The second argument `parsers` passed to `parsers.parse` has been removed; `undefined` and `null` are not passed to plugin's `print` function; Allow using arbitrary truthy values for `label` docs; `getFileInfo()` resolves config by default; Plugin search feature has been removed; Ignore `.gitignore`d files by default; scored as 18; upgraded with eslint-plugin-prettier, prettier-plugin-svelte (plugin of prettier)",
      "status": "todo",
      "repos": 31,
      "reposBehind": 6,
      "weeklyDownloads": 0
    },
    {
      "package": "jose",
      "members": ["jose"],
      "from": ">=5 <6",
      "to": ">=6 <7",
      "why": "declared directly in 20 of 52 sample repositories, 4 of them on an older major; 178 breaking API changes, 94 distinct (15 removed or renamed, 79 change shapes) from 5.10.0 to 6.2.12",
      "status": "todo",
      "repos": 20,
      "reposBehind": 4,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 178,
        "distinct": 94
      }
    },
    {
      "package": "eslint",
      "members": [
        "eslint",
        "@stylistic/eslint-plugin",
        "eslint-plugin-compat",
        "eslint-plugin-cypress",
        "eslint-plugin-regexp",
        "eslint-plugin-tailwindcss",
        "eslint-plugin-unicorn",
        "eslint-webpack-plugin"
      ],
      "from": ">=8 <9",
      "to": ">=10 <11",
      "why": "declared directly in 32 of 52 sample repositories, 27 of them on an older major; API change not measured (no type declarations); the migration guide lists 21 (https://eslint.org/docs/latest/use/migrate-to-10.0.0): `eslint:recommended` has been updated; New configuration file lookup algorithm; Old config format no longer supported; JSX references are now tracked; `eslint-env` comments are reported as errors; Jiti < v2.2.0 are no longer supported; POSIX character classes in glob patterns; `stylish` formatter now uses native `styleText` instead of `chalk`; Deprecated options of the `radix` rule; `no-shadow-restricted-names` now reports `globalThis` by default; `func-names` schema is stricter; `allowConstructorFlags` option of `no-invalid-regexp` now accepts only unique items; `name` property added to ESLint core configs; Removal of `type` property in errors of invalid `RuleTester` cases; `Program` AST node range spans entire source text; Fixer methods now require string `text` arguments; New requirements for `ScopeManager` implementations; Removal of deprecated `context` members; Removal of deprecated `SourceCode` methods; Prohibiting `errors` or `output` of valid RuleTester test cases; Removal of `nodeType` property in `LintMessage` objects; scored as 21; upgraded with @stylistic/eslint-plugin, eslint-plugin-compat, eslint-plugin-cypress, eslint-plugin-regexp, eslint-plugin-tailwindcss, eslint-plugin-unicorn, eslint-webpack-plugin (plugin of eslint)",
      "status": "todo",
      "repos": 32,
      "reposBehind": 27,
      "weeklyDownloads": 0,
      "codemod": "https://eslint.org/docs/latest/use/migrate-to-10.0.0 (`@eslint/migrate-config` converts .eslintrc to a flat config; removed APIs, rules and plugin compatibility are manual)"
    },
    {
      "package": "@opentelemetry/core",
      "members": [
        "@opentelemetry/core",
        "@opentelemetry/context-async-hooks",
        "@opentelemetry/resources",
        "@opentelemetry/sdk-metrics",
        "@opentelemetry/sdk-trace-base",
        "@opentelemetry/sdk-trace-node"
      ],
      "from": ">=1 <2",
      "to": ">=2 <3",
      "why": "declared directly in 20 of 52 sample repositories, 3 of them on an older major; 65 breaking API changes from 1.30.1 to 2.12.0; upgraded with @opentelemetry/context-async-hooks, @opentelemetry/resources, @opentelemetry/sdk-metrics, @opentelemetry/sdk-trace-base, @opentelemetry/sdk-trace-node (@opentelemetry released in lockstep, @opentelemetry/sdk-trace-base re-exports @opentelemetry/core, @opentelemetry/resources re-exports @opentelemetry/core, @opentelemetry/sdk-trace-node re-exports @opentelemetry/core, @opentelemetry/sdk-metrics re-exports @opentelemetry/core)",
      "status": "todo",
      "repos": 20,
      "reposBehind": 3,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 65,
        "distinct": 65,
        "guide": 9
      }
    },
    {
      "package": "@faker-js/faker",
      "members": ["@faker-js/faker"],
      "from": ">=8 <9",
      "to": ">=10 <11",
      "why": "declared directly in 17 of 52 sample repositories, 8 of them on an older major; 236 breaking API changes, 124 distinct (100 removed or renamed, 24 change shapes) from 8.4.1 to 10.6.0",
      "status": "todo",
      "repos": 17,
      "reposBehind": 8,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 236,
        "distinct": 124,
        "guide": 2
      }
    },
    {
      "package": "undici",
      "members": ["undici"],
      "from": ">=7 <8",
      "to": ">=8 <9",
      "why": "declared directly in 16 of 52 sample repositories, 13 of them on an older major; 170 breaking API changes, 159 distinct (153 removed or renamed, 6 change shapes) from 7.30.0 to 8.11.2",
      "status": "todo",
      "repos": 16,
      "reposBehind": 13,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 170,
        "distinct": 159
      }
    },
    {
      "package": "googleapis",
      "members": ["googleapis"],
      "from": ">=171 <172",
      "to": ">=184 <185",
      "why": "declared directly in 8 of 52 sample repositories, 8 of them on an older major; 13792 breaking API changes from 171.4.0 to 184.0.0",
      "status": "todo",
      "repos": 8,
      "reposBehind": 8,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 13792,
        "distinct": 13792
      }
    },
    {
      "package": "marked",
      "members": ["marked", "@types/marked"],
      "from": ">=15 <16",
      "to": ">=18 <19",
      "why": "declared directly in 18 of 52 sample repositories, 16 of them on an older major; 58 breaking API changes, 51 distinct (0 removed or renamed, 51 change shapes) from 15.0.12 to 18.1.0; upgraded with @types/marked (types for marked)",
      "status": "todo",
      "repos": 18,
      "reposBehind": 16,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 58,
        "distinct": 51
      }
    },
    {
      "package": "bullmq",
      "members": ["bullmq"],
      "from": ">=5 <6",
      "to": ">=6 <7",
      "why": "declared directly in 12 of 52 sample repositories, 10 of them on an older major; 290 breaking API changes, 279 distinct (225 removed or renamed, 54 change shapes) from 5.81.5 to 6.3.11",
      "status": "todo",
      "repos": 12,
      "reposBehind": 10,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 290,
        "distinct": 279
      }
    },
    {
      "package": "posthog-node",
      "members": ["posthog-node"],
      "from": ">=4 <5",
      "to": ">=5 <6",
      "why": "declared directly in 16 of 52 sample repositories, 4 of them on an older major; 65 breaking API changes from 4.18.0 to 5.55.0",
      "status": "todo",
      "repos": 16,
      "reposBehind": 4,
      "weeklyDownloads": 0,
      "breaking": {
        "total": 65,
        "distinct": 65
      }
    },
    {
      "package": "typescript",
      "members": ["typescript"],
      "from": ">=5 <6",
      "to": ">=6 <7",
      "why": "requested in UPT-56: declared in every repository of the 2026-10-14 OSS sample scan, most on 5.x; the compiler itself, so no type diff measures it: the 6.0 release notes (https://www.typescriptlang.org/docs/handbook/release-notes/typescript-6-0.html) deprecate baseUrl, moduleResolution node and classic, target ES5, module amd/umd/system/none, outFile, downlevelIteration, esModuleInterop and alwaysStrict false, module-keyword namespaces and import assertions, and change the strict, types, rootDir, module, target and noUncheckedSideEffectImports defaults; not measured",
      "status": "candidate"
    },
    {
      "package": "typescript",
      "members": ["typescript"],
      "from": ">=6 <7",
      "to": ">=7 <8",
      "why": "split 2026-10-14 from the 5 to 6 entry above: 6.0 deprecates what 7.0 removes (Announcing TypeScript 7.0, 2026-07-08, https://devblogs.microsoft.com/typescript/announcing-typescript-7-0/), so a 5.x repository goes through 6 first; 7.0 also makes stableTypeOrdering permanent, changes template literal inference on Unicode code points and drops JSDoc Closure-style function types; not measured",
      "status": "blocked",
      "blockedReason": "TypeScript 7.0 ships no JavaScript compiler API (typescript@7.0.2 exports only lib/version.cjs; the announcement says a new API comes with 7.1), so `check` cannot compute the target's diagnostics: compileCompilerUpgrade reports the compile as not done and only tsconfig findings would remain. Retry when typescript 7.x exposes a programmatic API check can load, or when check can run the target's tsc binary on the repository without executing repository code."
    }
  ]
}