Migrate off source-map-support to native Node source maps - #11295
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timotheeguerin
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July 17, 2026 14:24
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July 17, 2026 14:24
…grate # Conflicts: # .github/aw/actions-lock.json # .github/workflows/issue-triage.lock.yml
…migrate # Conflicts: # pnpm-lock.yaml
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Summary
Node has shipped native source-map support for stack traces since v14.6 via
process.setSourceMapsEnabled(true), and every workspace package now requires Node>=22. The third-partysource-map-supportdependency is therefore no longer needed.This replaces the
source-map-support/register.jsimport with the native API in the CLI entrypoints and drops the dependency.Changes
source-map-support/register.jswithprocess.setSourceMapsEnabled(true)in the CLI entrypoints (removing the associatedtry/catch+@ts-ignore/eslint-disable):packages/compiler/src/core/cli/cli.tspackages/pack/src/cli.tspackages/tspd/src/cli.tspackages/bundler/src/cli.tspackages/spector/src/cli/cli.tssource-map-supportfrom thepnpm-workspace.yamlcatalog and from thepackage.jsonof@typespec/compiler,@typespec/pack,@typespec/tspd, and@typespec/spector.pnpm-lock.yaml.Out of scope
packages/http-client-*/package-lock.jsonreferencesource-map-supportonly transitively via the published@typespec/spector; those npm-managed lockfiles regenerate separately when spector is republished.Validation
pnpm-lock.yamlhits are legitimate transitive deps (@babel/register, chronus tooling), not a direct dependency.