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Diffstat (limited to 'node_modules/@babel/code-frame/lib/index.js')
| -rw-r--r-- | node_modules/@babel/code-frame/lib/index.js | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/node_modules/@babel/code-frame/lib/index.js b/node_modules/@babel/code-frame/lib/index.js new file mode 100644 index 0000000..cba3f83 --- /dev/null +++ b/node_modules/@babel/code-frame/lib/index.js @@ -0,0 +1,163 @@ +"use strict"; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.codeFrameColumns = codeFrameColumns; +exports.default = _default; + +var _highlight = require("@babel/highlight"); + +let deprecationWarningShown = false; + +function getDefs(chalk) { + return { + gutter: chalk.grey, + marker: chalk.red.bold, + message: chalk.red.bold + }; +} + +const NEWLINE = /\r\n|[\n\r\u2028\u2029]/; + +function getMarkerLines(loc, source, opts) { + const startLoc = Object.assign({ + column: 0, + line: -1 + }, loc.start); + const endLoc = Object.assign({}, startLoc, loc.end); + const { + linesAbove = 2, + linesBelow = 3 + } = opts || {}; + const startLine = startLoc.line; + const startColumn = startLoc.column; + const endLine = endLoc.line; + const endColumn = endLoc.column; + let start = Math.max(startLine - (linesAbove + 1), 0); + let end = Math.min(source.length, endLine + linesBelow); + + if (startLine === -1) { + start = 0; + } + + if (endLine === -1) { + end = source.length; + } + + const lineDiff = endLine - startLine; + const markerLines = {}; + + if (lineDiff) { + for (let i = 0; i <= lineDiff; i++) { + const lineNumber = i + startLine; + + if (!startColumn) { + markerLines[lineNumber] = true; + } else if (i === 0) { + const sourceLength = source[lineNumber - 1].length; + markerLines[lineNumber] = [startColumn, sourceLength - startColumn + 1]; + } else if (i === lineDiff) { + markerLines[lineNumber] = [0, endColumn]; + } else { + const sourceLength = source[lineNumber - i].length; + markerLines[lineNumber] = [0, sourceLength]; + } + } + } else { + if (startColumn === endColumn) { + if (startColumn) { + markerLines[startLine] = [startColumn, 0]; + } else { + markerLines[startLine] = true; + } + } else { + markerLines[startLine] = [startColumn, endColumn - startColumn]; + } + } + + return { + start, + end, + markerLines + }; +} + +function codeFrameColumns(rawLines, loc, opts = {}) { + const highlighted = (opts.highlightCode || opts.forceColor) && (0, _highlight.shouldHighlight)(opts); + const chalk = (0, _highlight.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 ? (0, _highlight.default)(rawLines, opts) : rawLines; + let frame = highlightedLines.split(NEWLINE, end).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, " "); + const numberOfMarkers = hasMarker[1] || 1; + markerLine = ["\n ", maybeHighlight(defs.gutter, gutter.replace(/\d/g, " ")), " ", markerSpacing, maybeHighlight(defs.marker, "^").repeat(numberOfMarkers)].join(""); + + if (lastMarkerLine && opts.message) { + markerLine += " " + maybeHighlight(defs.message, opts.message); + } + } + + return [maybeHighlight(defs.marker, ">"), maybeHighlight(defs.gutter, gutter), line.length > 0 ? ` ${line}` : "", markerLine].join(""); + } else { + return ` ${maybeHighlight(defs.gutter, gutter)}${line.length > 0 ? ` ${line}` : ""}`; + } + }).join("\n"); + + if (opts.message && !hasColumns) { + frame = `${" ".repeat(numberMaxWidth + 1)}${opts.message}\n${frame}`; + } + + if (highlighted) { + return chalk.reset(frame); + } else { + return frame; + } +} + +function _default(rawLines, lineNumber, colNumber, opts = {}) { + if (!deprecationWarningShown) { + deprecationWarningShown = true; + const message = "Passing lineNumber and colNumber is deprecated to @babel/code-frame. Please use `codeFrameColumns`."; + + if (process.emitWarning) { + process.emitWarning(message, "DeprecationWarning"); + } else { + const deprecationError = new Error(message); + deprecationError.name = "DeprecationWarning"; + console.warn(new Error(message)); + } + } + + colNumber = Math.max(colNumber, 0); + const location = { + start: { + column: colNumber, + line: lineNumber + } + }; + return codeFrameColumns(rawLines, location, opts); +}
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