the weekStart option in locale file seens not work.

[julywind]

Describe the bug
A clear and concise description of what the bug is.

const dayjs = require('dayjs')
const weekday = require('dayjs/plugin/weekday')
const locale = {
  weekStart: 1
}
dayjs.locale(locale, null ,true)
dayjs.extend(weekday)

const d1 = dayjs().startOf('week')

const date = d1.toDate()
console.log(date, d1.weekday())

result is '2019-08-17T16:00:00.000Z 0'
Expected behavior
A clear and concise description of what you expected to happen.
2019-08-18T16:00:00.000Z 1

Information

• Day.js Version [e.g. v1.0.0] 1.8.15
• OS: [e.g. iOS] macOS
• Browser [e.g. chrome 62] node test.js
• Time zone: GMT+8 Asia/Shanghai

[julywind]

am i changing weekStart option in a right way?

[iamkun]

You are changing locale in the wrong way. Please check our docs and choose a build-in locale that week start on Monday.

[julywind]

all the doc, I can find only this, "dayjs().startOf('week'); // 取决于 locale 文件里 weekStart 的值", but i don't know how to change it. could you help me to find it? thanks!

[iamkun]

https://github.com/iamkun/dayjs/blob/dev/docs/en/I18n.md#customize

[ghost]

import from 'dayjs/locale/en-gb' // weekStart 1
 
dayjs.locale('en-gb').startOf('week').format()

[julywind]

I wanna change the weekStart option only, not all the locale properties because it's one of my calendar options. It seems imposibble to do like that.
thank you very much!

[iamkun]

just import enLocale from 'dayjs/locale/en' and modify it to the config you want, and dayjs.locale(enLocale).

[robertwt7]

just import enLocale from 'dayjs/locale/en' and modify it to the config you want, and dayjs.locale(enLocale).

You're amazing! Fixed my issue. Thanks

[iamkun]

here's another solution #215 (comment)

[bilal42011]

This en-gb locale startWeek property is 1 but it is not working ..Any solution