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opts: Object = {},
): string {
const highlighted =
(opts.highlightCode || opts.forceColor) && shouldHighlight(opts);
const chalk = getChalk(opts);
const defs = getDefs(chalk);
const maybeHighlight = (chalkFn, string) => {
return highlighted ? chalkFn(string) : string;
};
const lines = rawLines.split(NEWLINE);
const { start, end, markerLines } = getMarkerLines(loc, lines, opts);
const hasColumns = loc.start && typeof loc.start.column === "number";
const numberMaxWidth = String(end).length;
const highlightedLines = highlighted ? highlight(rawLines, opts) : rawLines;
let frame = highlightedLines
.split(NEWLINE)
.slice(start, end)
.map((line, index) => {
const number = start + 1 + index;
const paddedNumber = ` ${number}`.slice(-numberMaxWidth);
const gutter = ` ${paddedNumber} | `;
const hasMarker = markerLines[number];
const lastMarkerLine = !markerLines[number + 1];
if (hasMarker) {
let markerLine = "";
if (Array.isArray(hasMarker)) {
const markerSpacing = line
.slice(0, Math.max(hasMarker[0] - 1, 0))
.replace(/[^\t]/g, " ");