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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.detector = void 0;
const types_1 = require("./types");
const keys = Object.keys(types_1.typeHandlers);
// This map helps avoid validating for every single image type
const firstBytes = {
0x38: 'psd',
0x42: 'bmp',
0x44: 'dds',
0x47: 'gif',
0x49: 'tiff',
0x4d: 'tiff',
0x52: 'webp',
0x69: 'icns',
0x89: 'png',
0xff: 'jpg'
};
function detector(buffer) {
const byte = buffer[0];
if (byte in firstBytes) {
const type = firstBytes[byte];
if (type && types_1.typeHandlers[type].validate(buffer)) {
return type;
}
}
const finder = (key) => types_1.typeHandlers[key].validate(buffer);
return keys.find(finder);
}
exports.detector = detector;