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116 lines
2.7 KiB
116 lines
2.7 KiB
"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.default = highlight; |
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exports.getChalk = getChalk; |
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exports.shouldHighlight = shouldHighlight; |
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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.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 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 (code !== "" && 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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} |