utils

// 设置异步间隔延迟

` export const delay=(interval = 0) =>{

return new Promise(resolve => {
    
	let timer = setTimeout(_ => {
		clearTimeout(timer);
		resolve();
	}, interval);
});};

`

// 把文件按照二进制进行读取

export const  readFile=(file) =>{
	return new Promise(resolve => {
		let reader = new FileReader();
		reader.readAsBinaryString(file);
		reader.onload = ev => {
			resolve(ev.target.result);
		};
	});
}