A GitHub monorepo for various JavaScript sourcemap-related libraries, including gen-mapping, remapping, source-map, sourmap-codec, and trace-mapping. Useful for tooling that needs to generate, parse, encode, or trace source maps.
Project status
- Maintenance status: The monorepo (jridgewell/sourcemaps) shows an upstream push on 2026-04-21, suggesting ongoing maintenance, though the provided npm-package updates list stops in 2025-09.
- Apparent update cadence: Based only on the shown package updates, there were updates in mid-2025 through 2025-09, but there is a gap of several months in the provided data between the last listed update (2025-09-10) and today (2026-06-09).
AI summary generated
Recent updates
trace-mapping/0.3.31
trace-mapping v0.3.31 makes an internal change focused on improving performance of `generatedPositionFor`. The only explicit release documentation in-repo is a changelog entry mentioning that performance improvement, but the code diff shows a deeper refactor in how generated positions are indexed by source.
trace-mapping/0.3.30
trace-mapping/0.3.30 has no publisher-provided release notes, and the diff shows internal build and packaging changes rather than API additions. The main changes are around how the library is exported (conditional exports and UMD interop), plus patch-level dependency bumps within the @jridgewell sourcemaps toolchain.
sourcemap-codec/1.5.5
sourcemap-codec version 1.5.5 was published on 2025-08-12. No release notes were provided, so the developer-impacting changes (new features, fixes, breaking changes, or dependency updates) cannot be determined from the release description alone.
source-map/0.3.11
source-map/0.3.11 is effectively a metadata-only release in the provided diff: it bumps @jridgewell/source-map from 0.3.10 to 0.3.11 and updates the package changelog. The external release notes are missing, so the only “documented” details come from the in-repo changelog text, not from the publisher release notes.
remapping/2.3.5
No publisher release notes were provided for remapping/2.3.5. The diff for this release is very small and only shows version bumps plus changelog text describing changes to export behavior and the UMD plugin output.
gen-mapping/0.3.13
No publisher release notes were provided for gen-mapping/0.3.13. The code changes mainly affect packaging and module interop, including changes to the conditional exports map and the esbuild-generated UMD wrapper behavior for default exports.
Breakingtrace-mapping/0.3.29
trace-mapping version 0.3.29 was released on 2025-07-01. No release notes or change log details were provided, so the upgrade impact (features, fixes, breaking changes, security updates, or dependency changes) is not described in the available material.
sourcemap-codec/1.5.4
No release notes were provided for sourcemap-codec 1.5.4. The code diff shown contains only version and changelog updates, not functional source changes.
source-map/0.3.10
Release 0.3.10 for @jridgewell/source-map updates the package version and records two maintenance items in the package changelog. The provided code diff shows only metadata and changelog updates, with no direct source code changes visible in the diff contents.
remapping/2.3.4
Release remapping version 2.3.4 was published on 2025-07-01. The publisher did not provide any release notes, so no specific developer-impacting changes (features, breaking changes, fixes, or security updates) can be confirmed from the provided data.
trace-mapping/0.3.28
trace-mapping/0.3.28 (and related @jridgewell packages) bumps package versions and primarily changes the build pipeline used to generate UMD/CJS bundles. The code diff updates esbuild's UMD wrapper generation and adds a getOwnPropertyDescriptors polyfill intended for very old Node versions (Node 6).
trace-mapping/0.3.27
trace-mapping/0.3.27 is primarily a packaging and module compatibility release. The main change is removal of the `module-sync` export condition, which is used for `require(esm)`-style consumption.
trace-mapping/0.3.26
trace-mapping version 0.3.26 was published, but the provided release notes are empty. The code diff shown for this release is dominated by large additions that introduce new packages (notably gen-mapping and remapping) and new monorepo tooling, rather than small trace-mapping-only edits.
Featurestrace-mapping/0.3.25
trace-mapping version 0.3.25 refactors how source map inputs are typed and parsed, especially around nested sectioned maps. Release notes were not provided, so the documented behavior cannot be validated against what changed; the diff shows type export and typing compatibility changes, plus internal parsing adjustments.
Breakingtrace-mapping/0.3.24
trace-mapping/0.3.24 introduces support for source map v3 ignore lists via a new ignoreList field (and legacy x_google_ignoreList). It propagates ignoreList through AnyMap decoding and adds a new exported helper, isIgnored, to query whether a given source should be ignored.
Featurestrace-mapping/0.3.23
No release notes were provided for trace-mapping/0.3.23. The code diff shows a significant internal refactor in the source map tracing implementation (TraceMap and related exported helpers), along with CI and test tooling changes (Node versions, AVA to Mocha).
trace-mapping/0.3.22
The trace-mapping v0.3.22 release was published on 2024-01-19, but no release notes were provided by the publisher. Because the release notes are missing, this analysis cannot identify specific new features, bug fixes, breaking changes, security updates, or dependency changes from the provided information.