Draft: Add hires mode source map mode using range mappings#306
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takikawa wants to merge 1 commit intoRich-Harris:masterfrom
Draft
Draft: Add hires mode source map mode using range mappings#306takikawa wants to merge 1 commit intoRich-Harris:masterfrom
takikawa wants to merge 1 commit intoRich-Harris:masterfrom
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Adds an "experimental-range" option for the hires mode that provides a similar resolution as "true" but uses range mappings to reduce the number of mappings. Requires support for range mappings proposal in source map consumers: https://github.com/tc39/ecma426/blob/main/proposals/range-mappings.md
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This is a PR for adding an
"experimental-range"option for the source map output's hires mode (experimental because the flag relies on a non-finalized source map feature). This new option provides a similar resolution as providinghires: true, but uses range mappings to reduce the number of mappings.Range mappings is an in-progress proposal for source maps that we're working on in the source map specification group (TC39-TG4). It would allow mappings to be specified for a whole range of continuous positions at once.
This PR is marked as a draft because it uses features from @jridgewell/sourcemap-codec that haven't been released yet. Would be happy to address any feedback about it in its current state though!