24 lines
850 B
TypeScript
24 lines
850 B
TypeScript
export const IMAGE_UPLOAD_MAX_BYTES = 2 * 1024 * 1024;
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export const FILE_UPLOAD_MAX_BYTES = 10 * 1024 * 1024;
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const IMAGE_FILE_EXTENSION = /\.(?:avif|bmp|gif|heic|heif|jpe?g|png|svg|webp)$/i;
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export function isImageUpload(file: Pick<File, 'name' | 'type'>) {
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return file.type.toLowerCase().startsWith('image/') || IMAGE_FILE_EXTENSION.test(file.name);
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}
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export function assertUploadFileSize(
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file: Pick<File, 'name' | 'size' | 'type'>,
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customLimit?: { bytes: number; message: string },
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) {
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if (customLimit) {
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if (file.size > customLimit.bytes) throw new Error(customLimit.message);
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return;
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}
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const image = isImageUpload(file);
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const limit = image ? IMAGE_UPLOAD_MAX_BYTES : FILE_UPLOAD_MAX_BYTES;
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if (file.size > limit) {
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throw new Error(image ? '图片大小不能超过 2MB' : '文件大小不能超过 10MB');
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}
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}
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