fix(core): show friendly error for unsupported Node.js versions#41050
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The MCP SDK code in utilsBundle.js eagerly evaluates `class Request extends global.Request`, which throws on Node <18 where `global.Request` is undefined. The CLI entry path (`playwright/cli.js` -> `lib/program` -> `playwright-core/lib/coreBundle`) does not require `playwright-core/index.js`, so the Node-version guard there never ran and users saw a cryptic `Class extends value undefined` crash instead. Move the version check into `playwright-core/lib/bootstrap`, which is already imported as the first statement of `program.ts` (and the playwright-core CLI), so it runs before any bundle is loaded. The API entry (`playwright-core/index.js`) now requires bootstrap first to preserve the same behavior. Fixes: microsoft#41045
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Test results for "MCP"7207 passed, 1113 skipped Merge workflow run. |
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Test results for "tests 1"2 flaky43984 passed, 864 skipped Merge workflow run. |
pavelfeldman
approved these changes
May 29, 2026
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Summary
playwright-core/lib/bootstrapso it runs beforeutilsBundleis loaded.class Request extends global.Requestwas throwingClass extends value undefinedat module load, before the existing guard inplaywright-core/index.jscould run (the CLI path doesn't require that file.Fixes #41045
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