flying-hero
96f6318101
新增: - backend/venv/ - Python 虚拟环境 - backend/start.sh - 启动脚本（使用虚拟环境） - backend/requirements.txt - 依赖列表 - .gitignore - 忽略虚拟环境和缓存文件 说明: - 每个项目使用独立虚拟环境 - 避免依赖冲突 - 启动脚本自动创建和激活虚拟环境
22 lines
721 B
JavaScript
22 lines
721 B
JavaScript
'use strict';
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/**
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* Determine what entries should be displayed on the screen, based on the
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* currently selected index and the maximum visible. Used in list-based
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* prompts like `select` and `multiselect`.
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*
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* @param {number} cursor the currently selected entry
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* @param {number} total the total entries available to display
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* @param {number} [maxVisible] the number of entries that can be displayed
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*/
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module.exports = (cursor, total, maxVisible) => {
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maxVisible = maxVisible || total;
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let startIndex = Math.min(total- maxVisible, cursor - Math.floor(maxVisible / 2));
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if (startIndex < 0) startIndex = 0;
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let endIndex = Math.min(startIndex + maxVisible, total);
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return { startIndex, endIndex };
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};
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