babel-plugin-kimport/lib/index.js

'use strict';

Object.defineProperty(exports, "__esModule", {
	value: true
});

exports.default = function (_ref) {
	var types = _ref.types;

	var Programer = {
		visitor: {
			ImportDeclaration: function ImportDeclaration(path, _ref2) {
				var opts = _ref2.opts;
				var node = path.node,
				    source = node.source,
				    specifiers = node.specifiers;


				var currentConfigInstance = opts; //plugin 配置

				if (Array.isArray(opts)) {
					currentConfigInstance = opts.find(function (option) {
						return option.libraryName === source.value;
					}) || {};
				}

				(0, _assert2.default)(currentConfigInstance.libraryName, '\n\n libraryName should be provided! \n\n');

				//plugin 配置的依赖库libraryName名称
				var libraryName = currentConfigInstance.libraryName || opts.libraryName || 'k-view';

				//下划线
				currentConfigInstance.camel2UnderlineComponentName = typeof currentConfigInstance.camel2UnderlineComponentName === 'undefined' ? false : currentConfigInstance.camel2UnderlineComponentName;
				//横杆连接    
				currentConfigInstance.camel2DashComponentName = typeof currentConfigInstance.camel2DashComponentName === 'undefined' ? false : currentConfigInstance.camel2DashComponentName;

				// 确认导入库 是否是 .babelrc library属性指定库 以及 如果不是默认导入 才进行按需导入加载
				if (libraryName === source.value && !types.isImportDefaultSpecifier(specifiers[0]) && !types.isImportNamespaceSpecifier(specifiers[0])) {

					var newImports = specifiers.map(function (specifier) {
						// 遍历 出导入的每个包的说明描述符
						//转换后的文件名
						var transformedSourceName = currentConfigInstance.camel2UnderlineComponentName ? winPath(transCamel(specifier.imported.name, '_')) : currentConfigInstance.camel2DashComponentName ? winPath(transCamel(specifier.imported.name, '-')) : specifier.imported.name;
						var libraryDirectory = typeof currentConfigInstance.libraryDirectory === 'undefined' ? 'lib' : currentConfigInstance.libraryDirectory;

						//当前组件路径
						var compDirPath = winPath((0, _path.join)(libraryName, libraryDirectory, transformedSourceName));

						var compInstancePath = currentConfigInstance.customName ? currentConfigInstance.customName('' + transformedSourceName) : compDirPath + '/index.js';
						var compInstanceStylePath = currentConfigInstance.customStyleName ? currentConfigInstance.customStyleName('' + transformedSourceName) : compDirPath + '/style.css';

						return [types.importDeclaration([types.importDefaultSpecifier(specifier.local)], types.stringLiteral(compInstancePath)), types.callExpression(types.import(), [types.stringLiteral(compInstanceStylePath)])];
					});
					newImports = flatArray(newImports, 1);
					path.replaceWithMultiple(newImports);
				}
			}
		}
	};
	return Programer;
};

var _assert = require('assert');

var _assert2 = _interopRequireDefault(_assert);

var _path = require('path');

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function transCamel(_str, symbol) {
	var str = _str[0].toLowerCase() + _str.substr(1);
	return str.replace(/([A-Z])/g, function ($1) {
		return '' + symbol + $1.toLowerCase();
	});
}

function winPath(path) {
	return path.replace(/\\/g, '/');
}

function flatArray(arrParam, depArg) {
	var res = [],
	    depth = depArg || 1,
	    depNum = 0,
	    flatMap = function flatMap(arr) {
		arr.map(function (item, index, array) {
			if (Array.isArray(item)) {
				if (depNum < depth) {
					depNum++;
					flatMap(item);
				} else {
					res.push(item);
				}
			} else {
				res.push(item);
				if (array.length === index + 1) depNum = 0;
			}
		});
	};
	flatMap(arrParam);
	return res;
}