typescript错误 - 'boolean'不能分配给'number'类型

Question

有谁能够帮我.

我试图从数组中排序字符串

var someArray= ["3a445a_V1", "3", "2a33s454_V1", "1", "3_V2", "2s4a34s3_V2", "234343"];

const [record] = someArray.map(r => parseFloat(r.replace('_V','.'))).sort((a,b) => a < b);

console.log(record)
//it returns 3a445a.1

JFIDDLE

在浏览器console.log中它工作正常,而不是打字稿？

打字稿,它给出了以下错误 错误:

error TS2345: Argument of type '(a: number, b: number) => boolean' is not 
assignable to parameter of type '(a: number, b: number) => number'.
      Type 'boolean' is not assignable to type 'number'.

任何的想法？提前致谢

Answer 1

.sort((a,b) => a < b)是不正确的.该sort回调应该返回一个号码,而不是一个布尔-正是打字稿告诉你的.

相反:.sort((a,b) => a - b)(-代替<).或者b - a以另一种方式排序.