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chore: cap Jest workers and skip type-checking per worker #345

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Merged
spawnia merged 1 commit into from
Nov 9, 2026
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chore: cap Jest workers and skip type-checking per worker #345

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5 changes: 4 additions & 1 deletion jest.config.js
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Original file line number Diff line number Diff line change
@@ -1,8 +1,11 @@
const esModules = ['.*/es/', '.*@babel', '@mll-lab'].join('|');

module.exports = {
// Jest defaults to one worker per core, which exhausts memory on many-core machines
maxWorkers: '25%',
transform: {
'^.+\\.tsx?$': 'ts-jest',
// CI type-checks with tsc, so skip it per test worker
'^.+\\.tsx?$': ['ts-jest', { isolatedModules: true }],
[`(${esModules}).+\\.js$`]: 'babel-jest',
},
transformIgnorePatterns: [`/node_modules/(?!${esModules})`],
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