@mt-kit/utils
Version:
69 lines • 2.78 kB
JavaScript
/**
* 💾 内存信息
*
* @returns 返回一个 IMemory 对象
*
* 如果浏览器不支持 performance.memory，则返回 { usedJSHeapSize: 0, totalJSHeapSize: 0, jsHeapSizeLimit: 0 }
*/
export default function deviceMemory() {
try {
// 检查 performance 对象是否存在
if (typeof performance === "undefined") {
console.warn("performance 对象不可用");
return {
usedJSHeapSize: 0,
totalJSHeapSize: 0,
jsHeapSizeLimit: 0
};
}
const isMemory = "memory" in performance;
if (isMemory) {
try {
const { memory } = performance;
// 验证 memory 对象和其属性
if (!memory || typeof memory !== "object") {
console.warn("performance.memory 对象无效");
return {
usedJSHeapSize: 0,
totalJSHeapSize: 0,
jsHeapSizeLimit: 0
};
}
// 安全地获取内存值，提供默认值
const usedJSHeapSize = typeof memory.usedJSHeapSize === "number" ? memory.usedJSHeapSize : 0;
const totalJSHeapSize = typeof memory.totalJSHeapSize === "number" ? memory.totalJSHeapSize : 0;
const jsHeapSizeLimit = typeof memory.jsHeapSizeLimit === "number" ? memory.jsHeapSizeLimit : 0;
// 验证数值有效性
const isValidNumber = (num) => !Number.isNaN(num) && Number.isFinite(num) && num >= 0;
return {
usedJSHeapSize: isValidNumber(usedJSHeapSize) ? Number((usedJSHeapSize / 1048576).toFixed(2)) : 0,
totalJSHeapSize: isValidNumber(totalJSHeapSize) ? Number((totalJSHeapSize / 1048576).toFixed(2)) : 0,
jsHeapSizeLimit: isValidNumber(jsHeapSizeLimit) ? Number((jsHeapSizeLimit / 1048576).toFixed(2)) : 0
};
}
catch (error) {
console.warn("访问 performance.memory 时出错:", error);
return {
usedJSHeapSize: 0,
totalJSHeapSize: 0,
jsHeapSizeLimit: 0
};
}
}
console.warn("浏览器不支持 performance.memory API");
return {
usedJSHeapSize: 0,
totalJSHeapSize: 0,
jsHeapSizeLimit: 0
};
}
catch (error) {
console.error("获取内存信息时出现严重错误:", error);
return {
usedJSHeapSize: 0,
totalJSHeapSize: 0,
jsHeapSizeLimit: 0
};
}
}
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