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perf(webpack-cli): allocate Levenshtein buffer lazily #4765

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Merged
alexander-akait merged 7 commits into from
May 27, 2026
Merged

perf(webpack-cli): allocate Levenshtein buffer lazily #4765

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026e65e
perf(webpack-cli): allocate Levenshtein buffer lazily
claude May 27, 2026
afcb558
perf(webpack-cli): defer interpret import and inline Levenshtein helper
claude May 27, 2026
1cbf6b6
test(webpack-cli): restore Levenshtein unit tests against inlined helper
claude May 27, 2026
6e1e3fc
perf(webpack-cli): skip schema-to-arguments walk when no flags are pa…
claude May 27, 2026
c3ca150
perf(webpack-cli): defer CLI require until after local-install check
claude May 27, 2026
bb962d5
chore: consolidate performance changesets into one entry
claude May 27, 2026
7c20d69
refactor(webpack-cli): use #distance private method for Levenshtein
claude May 27, 2026
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5 changes: 5 additions & 0 deletions .changeset/defer-interpret-inline-levenshtein.md
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Original file line number Diff line number Diff line change
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"webpack-cli": patch
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Reduced CLI startup work for `webpack build`: the `interpret` package is now imported only when no common-extension config file (`.js`/`.mjs`/`.cjs`/`.ts`/`.cts`/`.mts`) exists, and the Levenshtein "did you mean" helper was inlined to drop a module import.
5 changes: 5 additions & 0 deletions .changeset/lazy-levenshtein-buffer.md
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"webpack-cli": patch
---

Allocate the Levenshtein lookup buffer lazily so the 256 KB `Uint32Array` is only created when "did you mean" suggestions run (on error paths) rather than on every CLI invocation.
5 changes: 5 additions & 0 deletions .changeset/skip-getarguments-no-flags.md
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"webpack-cli": patch
---

Skip the webpack schema-to-arguments walk on a plain `webpack build` (and other no-flag invocations). When no option flags are present, the CLI no longer builds the full option list or calls `getArguments`, reducing startup time and peak memory for the most common invocation.
165 changes: 0 additions & 165 deletions packages/webpack-cli/src/levenshtein.ts
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