# Change Log
All notable changes to this project will be documented in this file.
See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
# [4.0.0](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@4.0.0-alpha.5...istanbul-lib-source-maps@4.0.0) (2019-12-20)
**Note:** Version bump only for package istanbul-lib-source-maps
# [4.0.0-alpha.5](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@4.0.0-alpha.4...istanbul-lib-source-maps@4.0.0-alpha.5) (2019-12-07)
**Note:** Version bump only for package istanbul-lib-source-maps
# [4.0.0-alpha.4](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@4.0.0-alpha.3...istanbul-lib-source-maps@4.0.0-alpha.4) (2019-11-16)
### Bug Fixes
* sourceFinder cannot be async. ([#501](https://github.com/istanbuljs/istanbuljs/issues/501)) ([094f1b8](https://github.com/istanbuljs/istanbuljs/commit/094f1b83b4652c5ba492781620cb6358c685a849))
# [4.0.0-alpha.3](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@4.0.0-alpha.2...istanbul-lib-source-maps@4.0.0-alpha.3) (2019-11-15)
### Bug Fixes
* mappedCoverage.addStatement is not a function ([#500](https://github.com/istanbuljs/istanbuljs/issues/500)) ([d77cc14](https://github.com/istanbuljs/istanbuljs/commit/d77cc147f7d791686af2975f7d906603335d0bfc)), closes [istanbuljs/nyc#940](https://github.com/istanbuljs/nyc/issues/940)
# [4.0.0-alpha.2](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@4.0.0-alpha.1...istanbul-lib-source-maps@4.0.0-alpha.2) (2019-10-09)
### Features
* Convert to async API ([#489](https://github.com/istanbuljs/istanbuljs/issues/489)) ([f8ebbc9](https://github.com/istanbuljs/istanbuljs/commit/f8ebbc9))
### BREAKING CHANGES
* MapStore#transformCoverage is now async and returns a
the coverage data only. The `sourceFinder` method is now async and
provided directly on the `MapStore` instance.
# [4.0.0-alpha.1](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@4.0.0-alpha.0...istanbul-lib-source-maps@4.0.0-alpha.1) (2019-10-06)
### Bug Fixes
* **package:** update rimraf to version 3.0.0 ([b6e7953](https://github.com/istanbuljs/istanbuljs/commit/b6e7953))
### Features
* Accept SourceStore and sourceStoreOpts options ([#482](https://github.com/istanbuljs/istanbuljs/issues/482)) ([0dc45a6](https://github.com/istanbuljs/istanbuljs/commit/0dc45a6))
* Add addInputSourceMapsSync and getSourceMapSync methods ([#484](https://github.com/istanbuljs/istanbuljs/issues/484)) ([dd7048e](https://github.com/istanbuljs/istanbuljs/commit/dd7048e))
### BREAKING CHANGES
* sourceStore and tmpdir options are removed.
# [4.0.0-alpha.0](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@3.0.6...istanbul-lib-source-maps@4.0.0-alpha.0) (2019-06-19)
### Features
* Update dependencies, require Node.js 8 ([#401](https://github.com/istanbuljs/istanbuljs/issues/401)) ([bf3a539](https://github.com/istanbuljs/istanbuljs/commit/bf3a539))
### BREAKING CHANGES
* Node.js 8 is now required
## [3.0.6](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@3.0.5...istanbul-lib-source-maps@3.0.6) (2019-04-24)
### Bug Fixes
* if LEAST_UPPER_BOUND returns null, try GREATEST_LOWER_BOUND ([#375](https://github.com/istanbuljs/istanbuljs/issues/375)) ([72b0f05](https://github.com/istanbuljs/istanbuljs/commit/72b0f05))
## [3.0.5](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@3.0.4...istanbul-lib-source-maps@3.0.5) (2019-04-09)
**Note:** Version bump only for package istanbul-lib-source-maps
## [3.0.4](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@3.0.3...istanbul-lib-source-maps@3.0.4) (2019-04-03)
**Note:** Version bump only for package istanbul-lib-source-maps
## [3.0.3](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@3.0.2...istanbul-lib-source-maps@3.0.3) (2019-03-12)
### Bug Fixes
* Map unique files once, regardless of path separator ([#287](https://github.com/istanbuljs/istanbuljs/issues/287)) ([39a1e56](https://github.com/istanbuljs/istanbuljs/commit/39a1e56))
## [3.0.2](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@3.0.1...istanbul-lib-source-maps@3.0.2) (2019-01-26)
**Note:** Version bump only for package istanbul-lib-source-maps
## [3.0.1](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@3.0.0...istanbul-lib-source-maps@3.0.1) (2018-12-25)
### Bug Fixes
* correct variable name in source-map transform ([#257](https://github.com/istanbuljs/istanbuljs/issues/257)) ([de9c921](https://github.com/istanbuljs/istanbuljs/commit/de9c921))
# [3.0.0](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@2.0.1...istanbul-lib-source-maps@3.0.0) (2018-12-19)
### Bug Fixes
* correctly calculate end position of sourcemap statement ([f97ffc7](https://github.com/istanbuljs/istanbuljs/commit/f97ffc7))
### BREAKING CHANGES
* coverage output can now contain Infinity, when a range extends past the source in a file.
## [2.0.1](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@2.0.0...istanbul-lib-source-maps@2.0.1) (2018-07-07)
**Note:** Version bump only for package istanbul-lib-source-maps
# [2.0.0](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@1.2.5...istanbul-lib-source-maps@2.0.0) (2018-06-06)
### Bug Fixes
* use null prototype for map objects ([#177](https://github.com/istanbuljs/istanbuljs/issues/177)) ([9a5a30c](https://github.com/istanbuljs/istanbuljs/commit/9a5a30c))
### BREAKING CHANGES
* a null prototype is now used in several places rather than the default `{}` assignment.
## [1.2.5](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@1.2.4...istanbul-lib-source-maps@1.2.5) (2018-05-31)
### Bug Fixes
* process.cwd is a function not a string ([#163](https://github.com/istanbuljs/istanbuljs/issues/163)). ([#171](https://github.com/istanbuljs/istanbuljs/issues/171)) ([9c7802c](https://github.com/istanbuljs/istanbuljs/commit/9c7802c))
## [1.2.4](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@1.2.3...istanbul-lib-source-maps@1.2.4) (2018-03-04)
**Note:** Version bump only for package istanbul-lib-source-maps
## [1.2.3](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@1.2.2...istanbul-lib-source-maps@1.2.3) (2018-02-13)
**Note:** Version bump only for package istanbul-lib-source-maps
## [1.2.2](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@1.2.1...istanbul-lib-source-maps@1.2.2) (2017-10-21)
**Note:** Version bump only for package istanbul-lib-source-maps
## [1.2.1](https://github.com/istanbuljs/istanbuljs/compare/istanbul-lib-source-maps@1.2.0...istanbul-lib-source-maps@1.2.1) (2017-05-27)
# [1.2.0](https://github.com/istanbuljs/istanbul-lib-source-maps/compare/istanbul-lib-source-maps@1.1.1...istanbul-lib-source-maps@1.2.0) (2017-04-29)
### Features
* pull in debug module, to make debug messages optional ([#36](https://github.com/istanbuljs/istanbuljs/issues/36)) ([189519d](https://github.com/istanbuljs/istanbul-lib-source-maps/commit/189519d))
## [1.1.1](https://github.com/istanbuljs/istanbul-lib-source-maps/compare/istanbul-lib-source-maps@1.1.0...istanbul-lib-source-maps@1.1.1) (2017-03-27)
# [1.1.0](https://github.com/istanbuljs/istanbul-lib-source-maps/compare/v1.0.2...v1.1.0) (2016-11-10)
### Features
* read and apply any input source maps stored with coverage data ([#4](https://github.com/istanbuljs/istanbul-lib-source-maps/issues/4)) ([aea405b](https://github.com/istanbuljs/istanbul-lib-source-maps/commit/aea405b))
## [1.0.2](https://github.com/istanbuljs/istanbul-lib-source-maps/compare/v1.0.1...v1.0.2) (2016-10-03)
### Bug Fixes
* broken mapped coverage report ([#6](https://github.com/istanbuljs/istanbul-lib-source-maps/issues/6)) ([d9dd738](https://github.com/istanbuljs/istanbul-lib-source-maps/commit/d9dd738))
## [1.0.1](https://github.com/istanbuljs/istanbul-lib-source-maps/compare/v1.0.0...v1.0.1) (2016-09-13)
### Bug Fixes
* position validation shouldn't throw away locations with 0 ([#5](https://github.com/istanbuljs/istanbul-lib-source-maps/issues/5)) ([ac4b72c](https://github.com/istanbuljs/istanbul-lib-source-maps/commit/ac4b72c))
# [1.0.0](https://github.com/istanbuljs/istanbul-lib-source-maps/compare/v1.0.0-alpha.9...v1.0.0) (2016-08-31)
### Bug Fixes
* discard more bad source map positions ([#3](https://github.com/istanbuljs/istanbul-lib-source-maps/issues/3)) ([ed7b27f](https://github.com/istanbuljs/istanbul-lib-source-maps/commit/ed7b27f))