Riccardo Giorato
29 lines
820 B
TypeScript
29 lines
820 B
TypeScript
export function validateFileForUpload(file: File, rejectWebP: boolean = true): { valid: boolean; error?: string } {
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// Reject WebP files
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if (rejectWebP && (file.type === "image/webp" || file.name.toLowerCase().endsWith('.webp'))) {
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return {
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valid: false,
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error: "WebP files not supported. Please upload PNG, JPG, or JPEG files instead of WebP."
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}
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}
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// Check if file is an image
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if (!file.type.startsWith("image/")) {
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return {
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valid: false,
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error: "Only image files are supported."
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}
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}
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return { valid: true }
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}
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export function generateFilePreview(file: File): Promise<string> {
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return new Promise((resolve) => {
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const reader = new FileReader()
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reader.onload = (e) => {
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resolve(e.target?.result as string)
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}
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reader.readAsDataURL(file)
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})
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} |