217 lines
		
	
	
		
			6.8 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			217 lines
		
	
	
		
			6.8 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
'use strict';
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Object.defineProperty(exports, '__esModule', { value: true });
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var picocolors = require('picocolors');
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var jsTokens = require('js-tokens');
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var helperValidatorIdentifier = require('@babel/helper-validator-identifier');
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function isColorSupported() {
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  return (typeof process === "object" && (process.env.FORCE_COLOR === "0" || process.env.FORCE_COLOR === "false") ? false : picocolors.isColorSupported
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  );
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}
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const compose = (f, g) => v => f(g(v));
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function buildDefs(colors) {
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  return {
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    keyword: colors.cyan,
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    capitalized: colors.yellow,
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    jsxIdentifier: colors.yellow,
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    punctuator: colors.yellow,
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    number: colors.magenta,
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    string: colors.green,
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    regex: colors.magenta,
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    comment: colors.gray,
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    invalid: compose(compose(colors.white, colors.bgRed), colors.bold),
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    gutter: colors.gray,
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    marker: compose(colors.red, colors.bold),
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    message: compose(colors.red, colors.bold),
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    reset: colors.reset
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  };
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}
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const defsOn = buildDefs(picocolors.createColors(true));
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const defsOff = buildDefs(picocolors.createColors(false));
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function getDefs(enabled) {
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  return enabled ? defsOn : defsOff;
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}
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const sometimesKeywords = new Set(["as", "async", "from", "get", "of", "set"]);
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const NEWLINE$1 = /\r\n|[\n\r\u2028\u2029]/;
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const BRACKET = /^[()[\]{}]$/;
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let tokenize;
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{
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  const JSX_TAG = /^[a-z][\w-]*$/i;
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  const getTokenType = function (token, offset, text) {
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    if (token.type === "name") {
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      if (helperValidatorIdentifier.isKeyword(token.value) || helperValidatorIdentifier.isStrictReservedWord(token.value, true) || sometimesKeywords.has(token.value)) {
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        return "keyword";
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      }
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      if (JSX_TAG.test(token.value) && (text[offset - 1] === "<" || text.slice(offset - 2, offset) === "</")) {
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        return "jsxIdentifier";
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      }
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      if (token.value[0] !== token.value[0].toLowerCase()) {
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        return "capitalized";
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      }
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    }
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    if (token.type === "punctuator" && BRACKET.test(token.value)) {
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      return "bracket";
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    }
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    if (token.type === "invalid" && (token.value === "@" || token.value === "#")) {
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      return "punctuator";
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    }
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    return token.type;
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  };
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  tokenize = function* (text) {
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    let match;
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    while (match = jsTokens.default.exec(text)) {
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      const token = jsTokens.matchToToken(match);
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      yield {
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        type: getTokenType(token, match.index, text),
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        value: token.value
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      };
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    }
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  };
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}
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function highlight(text) {
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  if (text === "") return "";
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  const defs = getDefs(true);
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  let highlighted = "";
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  for (const {
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    type,
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    value
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  } of tokenize(text)) {
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    if (type in defs) {
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      highlighted += value.split(NEWLINE$1).map(str => defs[type](str)).join("\n");
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    } else {
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      highlighted += value;
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    }
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  }
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  return highlighted;
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}
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let deprecationWarningShown = false;
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const NEWLINE = /\r\n|[\n\r\u2028\u2029]/;
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function getMarkerLines(loc, source, opts) {
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  const startLoc = Object.assign({
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    column: 0,
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    line: -1
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  }, loc.start);
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  const endLoc = Object.assign({}, startLoc, loc.end);
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  const {
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    linesAbove = 2,
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    linesBelow = 3
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  } = opts || {};
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  const startLine = startLoc.line;
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  const startColumn = startLoc.column;
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  const endLine = endLoc.line;
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  const endColumn = endLoc.column;
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  let start = Math.max(startLine - (linesAbove + 1), 0);
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  let end = Math.min(source.length, endLine + linesBelow);
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  if (startLine === -1) {
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    start = 0;
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  }
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  if (endLine === -1) {
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    end = source.length;
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  }
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  const lineDiff = endLine - startLine;
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  const markerLines = {};
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  if (lineDiff) {
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    for (let i = 0; i <= lineDiff; i++) {
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      const lineNumber = i + startLine;
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      if (!startColumn) {
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        markerLines[lineNumber] = true;
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      } else if (i === 0) {
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        const sourceLength = source[lineNumber - 1].length;
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        markerLines[lineNumber] = [startColumn, sourceLength - startColumn + 1];
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      } else if (i === lineDiff) {
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        markerLines[lineNumber] = [0, endColumn];
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      } else {
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        const sourceLength = source[lineNumber - i].length;
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        markerLines[lineNumber] = [0, sourceLength];
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      }
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    }
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  } else {
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    if (startColumn === endColumn) {
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      if (startColumn) {
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        markerLines[startLine] = [startColumn, 0];
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      } else {
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        markerLines[startLine] = true;
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      }
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    } else {
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      markerLines[startLine] = [startColumn, endColumn - startColumn];
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    }
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  }
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  return {
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    start,
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    end,
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    markerLines
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  };
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}
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function codeFrameColumns(rawLines, loc, opts = {}) {
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  const shouldHighlight = opts.forceColor || isColorSupported() && opts.highlightCode;
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  const defs = getDefs(shouldHighlight);
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  const lines = rawLines.split(NEWLINE);
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  const {
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    start,
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    end,
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    markerLines
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  } = getMarkerLines(loc, lines, opts);
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  const hasColumns = loc.start && typeof loc.start.column === "number";
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  const numberMaxWidth = String(end).length;
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  const highlightedLines = shouldHighlight ? highlight(rawLines) : rawLines;
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  let frame = highlightedLines.split(NEWLINE, end).slice(start, end).map((line, index) => {
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    const number = start + 1 + index;
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    const paddedNumber = ` ${number}`.slice(-numberMaxWidth);
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    const gutter = ` ${paddedNumber} |`;
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    const hasMarker = markerLines[number];
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    const lastMarkerLine = !markerLines[number + 1];
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    if (hasMarker) {
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      let markerLine = "";
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      if (Array.isArray(hasMarker)) {
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        const markerSpacing = line.slice(0, Math.max(hasMarker[0] - 1, 0)).replace(/[^\t]/g, " ");
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        const numberOfMarkers = hasMarker[1] || 1;
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        markerLine = ["\n ", defs.gutter(gutter.replace(/\d/g, " ")), " ", markerSpacing, defs.marker("^").repeat(numberOfMarkers)].join("");
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        if (lastMarkerLine && opts.message) {
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          markerLine += " " + defs.message(opts.message);
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        }
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      }
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      return [defs.marker(">"), defs.gutter(gutter), line.length > 0 ? ` ${line}` : "", markerLine].join("");
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    } else {
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      return ` ${defs.gutter(gutter)}${line.length > 0 ? ` ${line}` : ""}`;
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    }
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  }).join("\n");
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  if (opts.message && !hasColumns) {
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    frame = `${" ".repeat(numberMaxWidth + 1)}${opts.message}\n${frame}`;
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  }
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  if (shouldHighlight) {
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    return defs.reset(frame);
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  } else {
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    return frame;
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  }
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}
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function index (rawLines, lineNumber, colNumber, opts = {}) {
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  if (!deprecationWarningShown) {
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    deprecationWarningShown = true;
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    const message = "Passing lineNumber and colNumber is deprecated to @babel/code-frame. Please use `codeFrameColumns`.";
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    if (process.emitWarning) {
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      process.emitWarning(message, "DeprecationWarning");
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    } else {
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      const deprecationError = new Error(message);
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      deprecationError.name = "DeprecationWarning";
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      console.warn(new Error(message));
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    }
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  }
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  colNumber = Math.max(colNumber, 0);
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  const location = {
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    start: {
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      column: colNumber,
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      line: lineNumber
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    }
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  };
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  return codeFrameColumns(rawLines, location, opts);
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}
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exports.codeFrameColumns = codeFrameColumns;
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exports.default = index;
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exports.highlight = highlight;
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//# sourceMappingURL=index.js.map
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