imageSize.ts•961 B
import probe from "probe-image-size";
import fs from "fs";
// 从URL获取图片尺寸的纯函数实现
export async function getImageSizeFromUrl(imageUrl: string) {
// 获取图片尺寸信息
const imageInfo = await probe(imageUrl);
return {
width: imageInfo.width,
height: imageInfo.height,
type: imageInfo.type,
mime: imageInfo.mime,
};
}
// 从本地文件获取图片尺寸的纯函数实现
export async function getLocalImageSize(imagePath: string) {
// 检查文件是否存在
if (!fs.existsSync(imagePath)) {
throw new Error(`文件不存在: ${imagePath}`);
}
// 使用Buffer（同步方法）
const imageBuffer = fs.readFileSync(imagePath);
const result = probe.sync(imageBuffer);
if (!result) {
throw new Error(`无法识别图片格式: ${imagePath}`);
}
return {
width: result.width,
height: result.height,
type: result.type,
mime: result.mime,
path: imagePath,
};
}