Fix Input#origin() returning incorrect position
#2036
+99
−11
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mizdra
commented
Mar 24, 2025
| let consumer = this.map.consumer() | ||
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| let from = consumer.originalPositionFor({ column, line }) | ||
| let from = consumer.originalPositionFor({ column: column - 1, line }) |
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The column argument of originalPositionFor is 0-based.
It is not clear from jsdoc whether the column argument of Input#origin is 1-based or 0-based.
Line 208 in 6a2199b
However, postcss uses 1-based columns in many APIs. It should be a 1-based column here too.
To convert a 1-based column to a 0-based column, subtract 1.
mizdra
commented
Mar 24, 2025
| column: from.column, | ||
| endColumn: to && to.column, | ||
| column: from.column + 1, | ||
| endColumn: to && to.column + 1, |
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The return value column of originalPositionFor is 0-based.
To convert a 0-based column to a 1-based column, add 1.
mizdra
commented
Mar 24, 2025
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| test('origin() returns source position with source map', () => { | ||
| // @ts-expect-error source-map-js accepts null, but it's not in the types (ref: https://github.com/7rulnik/source-map-js/blob/428d49f6b1e1614f082b7706fa879a3d9c64f728/test/test-source-node.js#L20) | ||
| let node = new SourceNode(null, null, null, [ |
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The original columns generated by concat-with-sourcemaps are rough. So I used source-map-js.
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fix: #2035