How to use the image-size/lib/types.forEach function in image-size
To help you get started, we’ve selected a few image-size examples, based on popular ways it is used in public projects.
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HuasoFoundries / systemjs-less-plugin / imagesize.js View on Github 
typeMap = {};
// load all available handlers
handlers.bmp = require('image-size/lib/types/bmp');
handlers.gif = require('image-size/lib/types/gif');
handlers.jpg = require('image-size/lib/types/jpg');
handlers.png = require('image-size/lib/types/png');
handlers.psd = require('image-size/lib/types/psd');
handlers.svg = require('image-size/lib/types/svg');
handlers.tiff = require('image-size/lib/types/tiff');
handlers.webp = require('image-size/lib/types/webp');
// load all available handlers
types.forEach(function (type) {
typeMap[type] = handlers[type].detect;
});
var detector = function (buffer, filepath) {
var type, result;
for (type in typeMap) {
result = typeMap[type](buffer, filepath);
if (result) {
return type;
}
}
};
// Maximum buffer size, with a default of 128 kilobytes.
// TO-DO: make this adaptive based on the initial signature of the image
