bide:线性异步值求解器

比德 线性a / sync值求解器 const bode = bide ( { next ( value ) { if ( value === 5 ) return new Promise ( res => setTimeout ( res , 50 , 2 ) ) ; else console . log ( value ) ; // 1, 2, 3, 4 } , done ( err ) { if ( err ) throw err ; console . log ( bode . state ) ; // resolved } } ) . by ( 1 , 5 , // will be replaced with the resolved value new Promise ( res => se