41 lines
1023 B
JavaScript
41 lines
1023 B
JavaScript
"use strict";
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const LinesAndColumns = require("lines-and-columns").default;
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const { codeFrameColumns } = require("@babel/code-frame");
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const codeFrameColumnsOptions = {
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linesAbove: Number.POSITIVE_INFINITY,
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linesBelow: Number.POSITIVE_INFINITY,
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};
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const locationForRange = (text, rangeStart, rangeEnd) => {
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if (rangeStart > rangeEnd) {
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[rangeStart, rangeEnd] = [rangeEnd, rangeStart];
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}
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const lines = new LinesAndColumns(text);
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const start = lines.locationForIndex(rangeStart);
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const end = lines.locationForIndex(rangeEnd);
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start.line += 1;
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start.column += 1;
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end.line += 1;
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if (start.line === end.line) {
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end.column += 1;
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}
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return {
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start,
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end,
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};
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};
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const visualizeRange = (text, { rangeStart = 0, rangeEnd = text.length }) =>
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codeFrameColumns(
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text,
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locationForRange(text, rangeStart, rangeEnd),
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rangeStart > rangeEnd
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? { ...codeFrameColumnsOptions, message: "[Reversed range]" }
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: codeFrameColumnsOptions
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);
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module.exports = visualizeRange;
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