Provides StructuredSource and functionality for converting range and loc vice versa.
npm install structured-sourceProvides StructuredSource and functionality for converting range and loc vice versa.
``sh`
npm install structured-source
`js
import assert from "node:assert";
import { StructuredSource } from "structured-source";
const src = new StructuredSource('aaa\u2028aaaa\u2029aaaaa\n');
// positionToIndex({ line: number, column: number) -> number
assert(src.positionToIndex({ line: 1, column: 2 }) === 2);
// indexToPosition(number) -> { line: number, column: number }
assert.deepStrictEqual(src.indexToPosition(2), { line: 1, column: 2 });
// rangeToLocation([ number, number ]) -> { start: { line: number, column: number}, end: { line: number, column: number } }
assert.deepStrictEqual(src.rangeToLocation([0, 2]), {
start: { line: 1, column: 0 },
end: { line: 1, column: 2 }
});
// locationToRange({ start: { line: number, column: number}, end: { line: number, column: number } }) -> [ number, number ]
assert.deepStrictEqual(src.locationToRange({
start: { line: 1, column: 0 },
end: { line: 1, column: 2 }
}), [0, 2]);
``
- Line number starts with 1.
- Column number starts with 0.
Copyright (C) 2012-2014 Yusuke Suzuki
(twitter: @Constellation) and other contributors.
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