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Valor de retorno de la función dentro de la función dentro de la función en JavaScript

Obtengo el valor {ancho: 0, alto: 0}. ¿Cómo alcanzar el valor?

 function getImageSize(file) { if (/\.(jpe?g|png|gif)$/i.test(file.name)) { var reader = new FileReader(); var read = reader.onload = () => { var image = new Image(); var value = image.onload = () => { var size = { width: image.width, height: image.height }; return size; } image.src = reader.result; return value(); } reader.readAsDataURL(file); return (read()); } }
about 4 years ago · Juan Pablo Isaza
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