Add `language: deno` support by shaanmajid · Pull Request #1516 · j178/prek

shaanmajid · 2026-02-01T02:55:12Z

Closes #619

.github/workflows/ci.yml

codecov · 2026-02-01T02:57:39Z

Codecov Report

❌ Patch coverage is 91.70404% with 37 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.78%. Comparing base (c09510e) to head (2655397).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
crates/prek/src/languages/deno/installer.rs	85.71%	26 Missing ⚠️
crates/prek/src/languages/deno/deno.rs	96.59%	5 Missing ⚠️
crates/prek/src/languages/deno/version.rs	97.27%	3 Missing ⚠️
crates/prek/src/languages/mod.rs	50.00%	2 Missing ⚠️
crates/prek/src/languages/version.rs	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1516      +/-   ##
==========================================
- Coverage   91.79%   91.78%   -0.02%     
==========================================
  Files          98      101       +3     
  Lines       20119    20565     +446     
==========================================
+ Hits        18469    18876     +407     
- Misses       1650     1689      +39

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prek-ci-bot · 2026-02-01T03:00:12Z

📦 Cargo Bloat Comparison

Binary size change: +0.40% (24.8 MiB → 24.9 MiB)

Expand for cargo-bloat output

Head Branch Results

 File  .text     Size             Crate Name
 1.3%   2.7% 332.0KiB        aws_lc_sys aws_lc_0_38_0_aes_gcm_encrypt_avx512
 1.3%   2.7% 332.0KiB        aws_lc_sys aws_lc_0_38_0_aes_gcm_decrypt_avx512
 0.3%   0.6%  77.6KiB              prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.3%   0.6%  71.9KiB              prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.3%   0.6%  68.9KiB             prek? <prek::cli::Command as clap_builder::derive::Subcommand>::augment_subcommands
 0.2%   0.5%  56.8KiB              prek prek::languages::<impl prek::config::Language>::install::{{closure}}
 0.2%   0.4%  51.0KiB annotate_snippets annotate_snippets::renderer::render::render
 0.2%   0.4%  46.5KiB              prek prek::run::{{closure}}
 0.2%   0.3%  42.2KiB              prek prek::cli::run::run::run::{{closure}}
 0.1%   0.3%  31.8KiB             prek? <prek::cli::RunArgs as clap_builder::derive::Args>::augment_args
 0.1%   0.2%  28.0KiB        aws_lc_sys aws_lc_0_38_0_edwards25519_scalarmuldouble_alt
 0.1%   0.2%  27.8KiB      serde_saphyr saphyr_parser_bw::scanner::Scanner<T>::fetch_more_tokens
 0.1%   0.2%  27.5KiB        aws_lc_sys aws_lc_0_38_0_edwards25519_scalarmuldouble
 0.1%   0.2%  26.7KiB             prek? <prek::config::_::<impl serde_core::de::Deserialize for prek::config::Config>::deserialize::__Visitor as serde_core::de::Visitor>::visit_map
 0.1%   0.2%  26.3KiB              prek prek::cli::try_repo::try_repo::{{closure}}
 0.1%   0.2%  24.2KiB               std core::ptr::drop_in_place<prek::languages::<impl prek::config::Language>::install::{{closure}}>
 0.1%   0.2%  23.0KiB              prek prek::hooks::meta_hooks::MetaHooks::run::{{closure}}
 0.1%   0.2%  22.4KiB      serde_saphyr saphyr_parser_bw::scanner::Scanner<T>::fetch_more_tokens
 0.1%   0.2%  22.3KiB         [Unknown] Lp384_montjscalarmul_alt_p384_montjadd
 0.1%   0.2%  21.7KiB              prek prek::workspace::Project::init_hooks::{{closure}}
41.2%  86.0%  10.3MiB                   And 23389 smaller methods. Use -n N to show more.
47.9% 100.0%  11.9MiB                   .text section size, the file size is 24.9MiB

Base Branch Results

 File  .text     Size             Crate Name
 1.3%   2.7% 332.0KiB        aws_lc_sys aws_lc_0_38_0_aes_gcm_encrypt_avx512
 1.3%   2.7% 332.0KiB        aws_lc_sys aws_lc_0_38_0_aes_gcm_decrypt_avx512
 0.3%   0.6%  77.0KiB              prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.3%   0.6%  72.6KiB             prek? <prek::cli::Command as clap_builder::derive::Subcommand>::augment_subcommands
 0.3%   0.6%  69.8KiB              prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.2%   0.4%  51.0KiB annotate_snippets annotate_snippets::renderer::render::render
 0.2%   0.4%  50.6KiB              prek prek::languages::<impl prek::config::Language>::install::{{closure}}
 0.2%   0.4%  47.1KiB              prek prek::run::{{closure}}
 0.2%   0.3%  41.9KiB              prek prek::cli::run::run::run::{{closure}}
 0.1%   0.3%  32.0KiB             prek? <prek::cli::RunArgs as clap_builder::derive::Args>::augment_args
 0.1%   0.2%  28.0KiB        aws_lc_sys aws_lc_0_38_0_edwards25519_scalarmuldouble_alt
 0.1%   0.2%  27.8KiB      serde_saphyr saphyr_parser_bw::scanner::Scanner<T>::fetch_more_tokens
 0.1%   0.2%  27.5KiB        aws_lc_sys aws_lc_0_38_0_edwards25519_scalarmuldouble
 0.1%   0.2%  26.2KiB              prek prek::cli::try_repo::try_repo::{{closure}}
 0.1%   0.2%  25.3KiB             prek? <prek::config::_::<impl serde_core::de::Deserialize for prek::config::Config>::deserialize::__Visitor as serde_core::de::Visitor>::visit_map
 0.1%   0.2%  23.1KiB              prek prek::hooks::meta_hooks::MetaHooks::run::{{closure}}
 0.1%   0.2%  22.4KiB      serde_saphyr saphyr_parser_bw::scanner::Scanner<T>::fetch_more_tokens
 0.1%   0.2%  22.3KiB         [Unknown] Lp384_montjscalarmul_alt_p384_montjadd
 0.1%   0.2%  22.0KiB               std core::ptr::drop_in_place<prek::languages::<impl prek::config::Language>::install::{{closure}}>
 0.1%   0.2%  21.6KiB              prek prek::workspace::Project::init_hooks::{{closure}}
41.2%  86.0%  10.2MiB                   And 23349 smaller methods. Use -n N to show more.
47.9% 100.0%  11.9MiB                   .text section size, the file size is 24.8MiB

crates/prek/src/languages/deno/installer.rs

Add first-class support for Deno as a hook language, enabling pre-commit hooks to run Deno scripts, built-in commands (fmt, lint, check), and npm/jsr packages. Features: - Automatic Deno version management with downloads from GitHub releases - Support for language_version specs: major, minor, patch, semver ranges - Isolated DENO_DIR cache per hook environment - Built-in command detection (fmt, lint, test, etc.) without "deno run" - Script file execution with automatic "deno run" prefix - npm/jsr package support via additional_dependencies - Copies deno.json and deno.lock from repos for reproducible builds The implementation follows the patterns established by Bun and other managed language runtimes in the codebase. --------- Co-authored-by: Jo <10510431+j178@users.noreply.github.com> Co-authored-by: Janosh Riebesell <janosh.riebesell@gmail.com>

Add comprehensive test coverage and CI integration for Deno support: Tests (10 integration tests): - Basic inline eval execution - TypeScript script file execution - Built-in commands (fmt, lint) - Explicit deno prefix handling - npm package dependencies - language_version specifications - Auto-download without system deno - Semver range versions - Hook failure propagation - Permission flags CI: - Add Deno to language test matrix - Run on Linux only (downloads deno internally) Documentation: - Update languages.md with Deno usage examples - Regenerate CLI reference

prek-ci-bot · 2026-03-19T07:24:16Z

⚡️ Hyperfine Benchmarks

Summary: 0 regressions, 0 improvements above the 10% threshold.

Environment

OS: Linux 6.14.0-1017-azure
CPU: 4 cores
prek version: prek 0.3.6+27 (7f7453f 2026-03-19)
Rust version: rustc 1.94.0 (4a4ef493e 2026-03-02)
Hyperfine version: hyperfine 1.20.0

CLI Commands

Benchmarking basic commands in the main repo:

`prek --version`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base --version`	2.3 ± 0.1	2.2	2.9	1.00 ± 0.06
`prek-head --version`	2.3 ± 0.1	2.2	3.0	1.00

`prek list`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base list`	8.9 ± 0.1	8.7	9.2	1.00
`prek-head list`	8.9 ± 0.1	8.7	9.4	1.00 ± 0.02

`prek validate-config .pre-commit-config.yaml`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base validate-config .pre-commit-config.yaml`	3.2 ± 0.0	3.1	3.3	1.00 ± 0.02
`prek-head validate-config .pre-commit-config.yaml`	3.2 ± 0.0	3.1	3.3	1.00

`prek sample-config`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base sample-config`	2.6 ± 0.0	2.5	2.7	1.00
`prek-head sample-config`	2.6 ± 0.0	2.5	2.7	1.01 ± 0.02

Cold vs Warm Runs

Comparing first run (cold) vs subsequent runs (warm cache):

`prek run --all-files (cold - no cache)`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base run --all-files`	157.1 ± 2.5	152.6	160.6	1.00
`prek-head run --all-files`	164.2 ± 10.0	155.9	188.2	1.05 ± 0.07

`prek run --all-files (warm - with cache)`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base run --all-files`	156.6 ± 3.4	151.4	164.6	1.00
`prek-head run --all-files`	157.3 ± 2.7	150.4	161.0	1.00 ± 0.03

Full Hook Suite

Running the builtin hook suite on the benchmark workspace:

`prek run --all-files (full builtin hook suite)`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base run --all-files`	158.3 ± 4.0	153.6	178.3	1.00
`prek-head run --all-files`	161.5 ± 27.5	150.5	350.8	1.02 ± 0.18

Individual Hook Performance

Benchmarking each hook individually on the test repo:

`prek run trailing-whitespace --all-files`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base run trailing-whitespace --all-files`	21.8 ± 0.3	21.1	22.3	1.00 ± 0.02
`prek-head run trailing-whitespace --all-files`	21.8 ± 0.3	21.2	22.4	1.00

`prek run end-of-file-fixer --all-files`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base run end-of-file-fixer --all-files`	29.0 ± 1.8	25.7	32.6	1.00
`prek-head run end-of-file-fixer --all-files`	29.4 ± 2.2	25.7	35.6	1.01 ± 0.10

`prek run check-json --all-files`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base run check-json --all-files`	12.1 ± 0.2	11.8	12.6	1.00 ± 0.03
`prek-head run check-json --all-files`	12.1 ± 0.3	11.6	12.6	1.00

`prek run check-yaml --all-files`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base run check-yaml --all-files`	11.9 ± 0.2	11.6	12.5	1.01 ± 0.02
`prek-head run check-yaml --all-files`	11.8 ± 0.1	11.6	12.2	1.00

`prek run check-toml --all-files`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base run check-toml --all-files`	12.0 ± 0.2	11.6	12.6	1.00
`prek-head run check-toml --all-files`	12.1 ± 0.3	11.5	13.0	1.00 ± 0.03

`prek run check-xml --all-files`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base run check-xml --all-files`	12.1 ± 0.4	11.5	13.1	1.01 ± 0.04
`prek-head run check-xml --all-files`	11.9 ± 0.2	11.4	12.5	1.00

`prek run detect-private-key --all-files`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base run detect-private-key --all-files`	19.4 ± 1.6	16.8	23.3	1.05 ± 0.13
`prek-head run detect-private-key --all-files`	18.4 ± 1.6	16.3	22.0	1.00

`prek run fix-byte-order-marker --all-files`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base run fix-byte-order-marker --all-files`	23.8 ± 1.5	21.2	26.5	1.00
`prek-head run fix-byte-order-marker --all-files`	24.2 ± 1.9	21.2	27.9	1.02 ± 0.10

Installation Performance

Benchmarking hook installation (fast path hooks skip Python setup):

`prek install-hooks (cold - no cache)`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base install-hooks`	4.7 ± 0.1	4.7	4.8	1.00 ± 0.02
`prek-head install-hooks`	4.7 ± 0.1	4.7	4.8	1.00

`prek install-hooks (warm - with cache)`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base install-hooks`	4.8 ± 0.0	4.7	4.8	1.00
`prek-head install-hooks`	4.8 ± 0.0	4.8	4.9	1.01 ± 0.01

File Filtering/Scoping Performance

Testing different file selection modes:

`prek run (staged files only)`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base run`	52.5 ± 0.8	51.4	54.7	1.00
`prek-head run`	53.0 ± 1.1	51.4	54.8	1.01 ± 0.03

`prek run --files '*.json' (specific file type)`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base run --files '*.json'`	9.0 ± 0.1	8.9	9.3	1.01 ± 0.02
`prek-head run --files '*.json'`	8.9 ± 0.1	8.7	9.1	1.00

Workspace Discovery & Initialization

Benchmarking hook discovery and initialization overhead:

`prek run --dry-run --all-files (measures init overhead)`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base run --dry-run --all-files`	14.0 ± 0.4	13.6	15.3	1.01 ± 0.03
`prek-head run --dry-run --all-files`	13.8 ± 0.1	13.6	14.1	1.00

Meta Hooks Performance

Benchmarking meta hooks separately:

`prek run check-hooks-apply --all-files`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base run check-hooks-apply --all-files`	12.5 ± 0.1	12.4	12.9	1.00
`prek-head run check-hooks-apply --all-files`	12.6 ± 0.1	12.5	12.7	1.00 ± 0.01

`prek run check-useless-excludes --all-files`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base run check-useless-excludes --all-files`	12.4 ± 0.1	12.3	12.8	1.00
`prek-head run check-useless-excludes --all-files`	12.5 ± 0.1	12.3	12.8	1.00 ± 0.01

`prek run identity --all-files`

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
`prek-base run identity --all-files`	10.8 ± 0.1	10.7	11.0	1.00
`prek-head run identity --all-files`	10.9 ± 0.1	10.8	11.0	1.01 ± 0.01

shaanmajid · 2026-03-19T07:25:31Z

Ahhh thanks for the ping haha. I can take this back up today if you'd like, otherwise if you're taking it over that'd be great as well :)

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crates/prek/src/languages/deno/deno.rs

crates/prek/src/languages/deno/installer.rs

Copilot

Pull request overview

Adds first-class language: deno support to prek, including toolchain resolution/download, schema + docs updates, and CI + integration tests to exercise Deno hooks.

Changes:

Register deno as a supported language across config parsing, schema, CLI docs, and language dispatch.
Implement Deno toolchain install/version resolution plus hook install/run plumbing.
Add Deno language integration tests and run them in CI via a new nextest profile and setup-deno.

Reviewed changes

Copilot reviewed 16 out of 16 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
`prek.schema.json`	Adds `deno` to schema definitions/enums.
`docs/languages.md`	Documents Deno as supported and describes version formats/usage examples.
`docs/cli.md`	Adds `deno` to the CLI “language” listing.
`crates/prek/tests/languages/main.rs`	Registers the new Deno test module.
`crates/prek/tests/languages/deno.rs`	Adds integration coverage for Deno execution, caching, versions, etc.
`crates/prek/src/store.rs`	Introduces tool/cache buckets for Deno.
`crates/prek/src/languages/version.rs`	Wires `LanguageRequest::Deno` into version request parsing/satisfaction checks.
`crates/prek/src/languages/mod.rs`	Adds Deno language implementation to install/health/run dispatch and capability flags.
`crates/prek/src/languages/deno/*`	Implements Deno language runner + installer + version request parsing.
`crates/prek/src/config.rs`	Adds `Language::Deno` to the enum.
`crates/prek-consts/src/env_vars.rs`	Adds `PREK_INTERNAL__DENO_BINARY_NAME` and `DENO_DIR`.
`.github/workflows/ci.yml`	Adds a `deno` language-test matrix entry and installs Deno in that job.
`.config/nextest.toml`	Adds `profile.lang-deno` filter for Deno language tests.

crates/prek/tests/languages/deno.rs

crates/prek/src/languages/deno/deno.rs

crates/prek/src/languages/deno/installer.rs

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Copilot

Pull request overview

Adds first-class language: deno support to prek (toolchain install + hook execution), wiring it through the language dispatch layer, CI, schema, and docs to close #619.

Changes:

Introduces a Deno language implementation with toolchain resolution/download + additional_dependencies installation via deno install --global.
Wires Deno through language parsing/dispatch, store buckets, env var constants, and CI/nextest profiles.
Adds end-to-end integration tests and expands docs/schema/CLI references to include deno.

Reviewed changes

Copilot reviewed 16 out of 16 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
`prek.schema.json`	Adds `deno` to the schema’s language/version surfaces.
`docs/languages.md`	Documents Deno language behavior, `language_version`, and dependency rules.
`docs/cli.md`	Updates CLI language listing to include `deno`.
`crates/prek/tests/languages/main.rs`	Registers the new `deno` language test module.
`crates/prek/tests/languages/deno.rs`	Adds integration coverage for Deno execution, deps, remote hooks, and version selection.
`crates/prek/src/store.rs`	Adds `ToolBucket::Deno` and `CacheBucket::Deno` for toolchain + caching.
`crates/prek/src/languages/version.rs`	Adds `LanguageRequest::Deno` to parse/satisfy Deno `language_version`.
`crates/prek/src/languages/mod.rs`	Plumbs `Language::Deno` into install/run/health checks and bucket selection.
`crates/prek/src/languages/deno/mod.rs`	Introduces the Deno language module layout and exports.
`crates/prek/src/languages/deno/installer.rs`	Implements system lookup + download/install for requested Deno versions.
`crates/prek/src/languages/deno/deno.rs`	Implements Deno hook env creation, dependency installs, and runtime execution.
`crates/prek/src/languages/deno/version.rs`	Defines Deno version/request parsing and matching.
`crates/prek/src/config.rs`	Adds `Language::Deno` to the config language enum.
`crates/prek-consts/src/env_vars.rs`	Adds Deno-related env var constants used by installer/runtime.
`.github/workflows/ci.yml`	Installs Deno in CI language matrix and adds `DENO_VERSION` env.
`.config/nextest.toml`	Adds a nextest profile to run only Deno language tests.

docs/languages.md

crates/prek/src/languages/deno/version.rs

--------- Co-authored-by: Jo <10510431+j178@users.noreply.github.com> Co-authored-by: Janosh Riebesell <janosh.riebesell@gmail.com>

github-advanced-security bot found potential problems Feb 1, 2026

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j178 reviewed Feb 1, 2026

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shaanmajid force-pushed the feat/deno-support branch from 7cc4a12 to d9f55cf Compare February 1, 2026 03:50

j178 mentioned this pull request Mar 19, 2026

[WIP] Support language: deno #965

Closed

shaanmajid and others added 3 commits March 19, 2026 15:16

Download from dl.deno.land

2c78323

j178 force-pushed the feat/deno-support branch from ca36577 to 2c78323 Compare March 19, 2026 07:18

Require explicit deno command

a9a18d5

j178 changed the title ~~Feat/deno support~~ Add language: deno support Mar 19, 2026

j178 marked this pull request as ready for review March 19, 2026 08:26

Copilot AI review requested due to automatic review settings March 19, 2026 08:26

chatgpt-codex-connector bot reviewed Mar 19, 2026

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j178 and others added 5 commits March 19, 2026 19:25

Potential fix for pull request finding

d76cd08

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Require explicit deno command

361c8f5

Remoe path support

4d80ad6

Fix reuse

9f9672e

Align Deno hooks with executable install semantics

0f8e2e6

j178 requested a review from Copilot March 19, 2026 17:32

Copilot started reviewing on behalf of j178 March 19, 2026 17:32 View session

Copilot AI reviewed Mar 19, 2026

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Set DENO_NO_UPDATE_CHECK

2655397

j178 force-pushed the feat/deno-support branch from 65fca65 to 2655397 Compare March 19, 2026 17:40

j178 merged commit f0066e2 into j178:master Mar 20, 2026
53 checks passed

j178 added a commit that referenced this pull request Mar 20, 2026

Add language: deno support (#1516)

2b811fb

--------- Co-authored-by: Jo <10510431+j178@users.noreply.github.com> Co-authored-by: Janosh Riebesell <janosh.riebesell@gmail.com>

BrewTestBot mentioned this pull request Mar 23, 2026

prek 0.3.8 Homebrew/homebrew-core#273730

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shaanmajid deleted the feat/deno-support branch March 25, 2026 23:30

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⚡️ Hyperfine Benchmarks

prek --version

prek list

prek validate-config .pre-commit-config.yaml

prek sample-config

prek run --all-files (cold - no cache)

prek run --all-files (warm - with cache)

prek run --all-files (full builtin hook suite)

prek run trailing-whitespace --all-files

prek run end-of-file-fixer --all-files

prek run check-json --all-files

prek run check-yaml --all-files

prek run check-toml --all-files

prek run check-xml --all-files

prek run detect-private-key --all-files

prek run fix-byte-order-marker --all-files

prek install-hooks (cold - no cache)

prek install-hooks (warm - with cache)

prek run (staged files only)

prek run --files '*.json' (specific file type)

prek run --dry-run --all-files (measures init overhead)

prek run check-hooks-apply --all-files

prek run check-useless-excludes --all-files

prek run identity --all-files

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shaanmajid commented Feb 1, 2026 •

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`prek --version`

`prek list`

`prek validate-config .pre-commit-config.yaml`

`prek sample-config`

`prek run --all-files (cold - no cache)`

`prek run --all-files (warm - with cache)`

`prek run --all-files (full builtin hook suite)`

`prek run trailing-whitespace --all-files`

`prek run end-of-file-fixer --all-files`

`prek run check-json --all-files`

`prek run check-yaml --all-files`

`prek run check-toml --all-files`

`prek run check-xml --all-files`

`prek run detect-private-key --all-files`

`prek run fix-byte-order-marker --all-files`

`prek install-hooks (cold - no cache)`

`prek install-hooks (warm - with cache)`

`prek run (staged files only)`

`prek run --files '*.json' (specific file type)`

`prek run --dry-run --all-files (measures init overhead)`

`prek run check-hooks-apply --all-files`

`prek run check-useless-excludes --all-files`

`prek run identity --all-files`