23 lines
733 B
TypeScript
Executable File
23 lines
733 B
TypeScript
Executable File
/**
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* Tracks newlines during parsing in order to provide an efficient API for
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* determining the one-indexed `{ line, col }` position for any offset
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* within the input.
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*/
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export declare class LineCounter {
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lineStarts: number[];
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/**
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* Should be called in ascending order. Otherwise, call
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* `lineCounter.lineStarts.sort()` before calling `linePos()`.
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*/
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addNewLine: (offset: number) => number;
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/**
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* Performs a binary search and returns the 1-indexed { line, col }
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* position of `offset`. If `line === 0`, `addNewLine` has never been
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* called or `offset` is before the first known newline.
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*/
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linePos: (offset: number) => {
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line: number;
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col: number;
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};
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}
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