28 lines
1.2 KiB
JavaScript
28 lines
1.2 KiB
JavaScript
// webAPP 标签状态纯函数：不可变风格，Node 可 require、浏览器挂 window.tabsStore
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// webapp tab state pure functions: immutable style, Node-requireable, browser exposes window.tabsStore
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(function (root, factory) {
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if (typeof module === 'object' && module.exports) module.exports = factory();
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else root.tabsStore = factory();
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})(typeof self !== 'undefined' ? self : this, function () {
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// 新增/激活标签：id 不存在才 push，返回激活 id 的新数组，不修改原数组
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// Add/activate a tab: push only if id missing, return a new array with id active
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function add(tabs, id, name) {
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const base = tabs.some(t => t.id === id) ? tabs : tabs.concat({ id, name });
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return base.map(t => ({ ...t, active: t.id === id }));
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}
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// 删除标签：过滤掉 id，返回新数组，不修改原数组
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// Remove a tab: filter out id, return a new array
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function remove(tabs, id) {
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return tabs.filter(t => t.id !== id);
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}
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// 切换激活标签：返回激活 id 的新数组，不修改原数组
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// Switch active tab: return a new array with id active
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function switchTo(tabs, id) {
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return tabs.map(t => ({ ...t, active: t.id === id }));
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}
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return { add, remove, switchTo };
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});
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