182 lines
		
	
	
		
			6.0 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			182 lines
		
	
	
		
			6.0 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
"use strict";
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var _postcss = require("postcss");
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var _postcss2 = _interopRequireDefault(_postcss);
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var _lodash = require("lodash.camelcase");
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var _lodash2 = _interopRequireDefault(_lodash);
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var _genericNames = require("generic-names");
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var _genericNames2 = _interopRequireDefault(_genericNames);
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var _unquote = require("./unquote");
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var _unquote2 = _interopRequireDefault(_unquote);
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var _parser = require("./css-loader-core/parser");
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var _parser2 = _interopRequireDefault(_parser);
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var _loader = require("./css-loader-core/loader");
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var _loader2 = _interopRequireDefault(_loader);
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var _generateScopedName = require("./generateScopedName");
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var _generateScopedName2 = _interopRequireDefault(_generateScopedName);
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var _saveJSON = require("./saveJSON");
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var _saveJSON2 = _interopRequireDefault(_saveJSON);
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var _behaviours = require("./behaviours");
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function _asyncToGenerator(fn) { return function () { var gen = fn.apply(this, arguments); return new Promise(function (resolve, reject) { function step(key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { return Promise.resolve(value).then(function (value) { step("next", value); }, function (err) { step("throw", err); }); } } return step("next"); }); }; }
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const PLUGIN_NAME = "postcss-modules";
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function getDefaultScopeBehaviour(opts) {
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  if (opts.scopeBehaviour && (0, _behaviours.isValidBehaviour)(opts.scopeBehaviour)) {
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    return opts.scopeBehaviour;
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  }
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  return _behaviours.behaviours.LOCAL;
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}
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function getScopedNameGenerator(opts) {
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  const scopedNameGenerator = opts.generateScopedName || _generateScopedName2.default;
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  if (typeof scopedNameGenerator === "function") return scopedNameGenerator;
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  return (0, _genericNames2.default)(scopedNameGenerator, {
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    context: process.cwd(),
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    hashPrefix: opts.hashPrefix
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  });
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}
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function getLoader(opts, plugins) {
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  const root = typeof opts.root === "undefined" ? "/" : opts.root;
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  return typeof opts.Loader === "function" ? new opts.Loader(root, plugins) : new _loader2.default(root, plugins);
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}
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function isGlobalModule(globalModules, inputFile) {
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  return globalModules.some(regex => inputFile.match(regex));
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}
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function getDefaultPluginsList(opts, inputFile) {
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  const globalModulesList = opts.globalModulePaths || null;
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  const exportGlobals = opts.exportGlobals || false;
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  const defaultBehaviour = getDefaultScopeBehaviour(opts);
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  const generateScopedName = getScopedNameGenerator(opts);
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  if (globalModulesList && isGlobalModule(globalModulesList, inputFile)) {
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    return (0, _behaviours.getDefaultPlugins)({
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      behaviour: _behaviours.behaviours.GLOBAL,
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      generateScopedName,
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      exportGlobals
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    });
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  }
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  return (0, _behaviours.getDefaultPlugins)({
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    behaviour: defaultBehaviour,
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    generateScopedName,
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    exportGlobals
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  });
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}
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function isOurPlugin(plugin) {
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  return plugin.postcssPlugin === PLUGIN_NAME;
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}
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function dashesCamelCase(string) {
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  return string.replace(/-+(\w)/g, (_, firstLetter) => firstLetter.toUpperCase());
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}
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module.exports = (opts = {}) => {
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  return {
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    postcssPlugin: PLUGIN_NAME,
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    OnceExit(css, { result }) {
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      return _asyncToGenerator(function* () {
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        const getJSON = opts.getJSON || _saveJSON2.default;
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        const inputFile = css.source.input.file;
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        const pluginList = getDefaultPluginsList(opts, inputFile);
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        const resultPluginIndex = result.processor.plugins.findIndex(function (plugin) {
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          return isOurPlugin(plugin);
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        });
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        if (resultPluginIndex === -1) {
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          throw new Error('Plugin missing from options.');
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        }
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        const earlierPlugins = result.processor.plugins.slice(0, resultPluginIndex);
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        const loaderPlugins = [...earlierPlugins, ...pluginList];
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        const loader = getLoader(opts, loaderPlugins);
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        const fetcher = function fetcher(file, relativeTo, depTrace) {
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          const unquoteFile = (0, _unquote2.default)(file);
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          const resolvedResult = typeof opts.resolve === 'function' && opts.resolve(unquoteFile);
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          const resolvedFile = resolvedResult instanceof Promise ? resolvedResult : Promise.resolve(resolvedResult);
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          return resolvedFile.then(function (f) {
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            return loader.fetch.call(loader, `"${f || unquoteFile}"`, relativeTo, depTrace);
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          });
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        };
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        const parser = new _parser2.default(fetcher);
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        yield (0, _postcss2.default)([...pluginList, parser.plugin()]).process(css, {
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          from: inputFile
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        });
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        const out = loader.finalSource;
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        if (out) css.prepend(out);
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        if (opts.localsConvention) {
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          const isFunc = typeof opts.localsConvention === "function";
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          parser.exportTokens = Object.entries(parser.exportTokens).reduce(function (tokens, [className, value]) {
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            if (isFunc) {
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              tokens[opts.localsConvention(className, value, inputFile)] = value;
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              return tokens;
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            }
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            switch (opts.localsConvention) {
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              case "camelCase":
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                tokens[className] = value;
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                tokens[(0, _lodash2.default)(className)] = value;
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                break;
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              case "camelCaseOnly":
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                tokens[(0, _lodash2.default)(className)] = value;
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                break;
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              case "dashes":
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                tokens[className] = value;
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                tokens[dashesCamelCase(className)] = value;
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                break;
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              case "dashesOnly":
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                tokens[dashesCamelCase(className)] = value;
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                break;
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            }
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            return tokens;
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          }, {});
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        }
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        result.messages.push({
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          type: "export",
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          plugin: "postcss-modules",
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          exportTokens: parser.exportTokens
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        });
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        // getJSON may return a promise
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        return getJSON(css.source.input.file, parser.exportTokens, result.opts.to);
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      })();
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    }
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  };
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};
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module.exports.postcss = true; |