10 curated breaking changes across major versions of source-map. Use this as a migration checklist before bumping dependencies.
[#350](https://github.com/mozilla/source-map/pull/350) -
[#363](https://github.com/mozilla/source-map/pull/363) -
[#362](https://github.com/mozilla/source-map/pull/362) -
[#371](https://github.com/mozilla/source-map/pull/371) -
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**Breaking change:** `new SourceMapConsumer` now returns a `Promise` object
**Breaking change:** when you're done using a `SourceMapConsumer` instance,
**Breaking change:** `SourceMapConsumer` used to be able to handle lines,
**Breaking change:** The `source-map` library now uses modern ECMAScript-isms:
**Breaking change:** Drop support for Node < 8. If you want to support older