116 lines
2.6 KiB
JavaScript
116 lines
2.6 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.shouldHighlight = shouldHighlight;
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exports.getChalk = getChalk;
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exports.default = highlight;
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var _jsTokens = require("js-tokens");
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var _helperValidatorIdentifier = require("@babel/helper-validator-identifier");
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var _chalk = require("chalk");
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const sometimesKeywords = new Set(["as", "async", "from", "get", "of", "set"]);
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function getDefs(chalk) {
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return {
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keyword: chalk.cyan,
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capitalized: chalk.yellow,
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jsxIdentifier: chalk.yellow,
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punctuator: chalk.yellow,
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number: chalk.magenta,
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string: chalk.green,
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regex: chalk.magenta,
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comment: chalk.grey,
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invalid: chalk.white.bgRed.bold
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};
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}
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const NEWLINE = /\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 ((0, _helperValidatorIdentifier.isKeyword)(token.value) || (0, _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.substr(offset - 2, 2) == "</")) {
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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 highlightTokens(defs, text) {
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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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const colorize = defs[type];
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if (colorize) {
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highlighted += value.split(NEWLINE).map(str => colorize(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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function shouldHighlight(options) {
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return !!_chalk.supportsColor || options.forceColor;
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}
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function getChalk(options) {
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return options.forceColor ? new _chalk.constructor({
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enabled: true,
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level: 1
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}) : _chalk;
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}
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function highlight(code, options = {}) {
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if (shouldHighlight(options)) {
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const chalk = getChalk(options);
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const defs = getDefs(chalk);
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return highlightTokens(defs, code);
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} else {
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return code;
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}
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}
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