76 lines
2.2 KiB
JavaScript
76 lines
2.2 KiB
JavaScript
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const dayjs = require("dayjs")
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/**
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* This file was largely taken from the helper-date package - we did this for two reasons:
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* 1. It made use of both moment of date.js - this caused some weird bugs with some relatively simple
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* syntax and didn't offer much in return.
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* 2. Replacing moment with dayjs helps massively reduce bundle size.
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* The original package can be found here:
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* https://github.com/helpers/helper-date
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*/
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function isOptions(val) {
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return typeof(val) === "object" && typeof(val.hash) === "object"
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}
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function isApp(thisArg) {
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return typeof(thisArg) === "object"
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&& typeof(thisArg.options) === "object"
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&& typeof(thisArg.app) === "object"
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}
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function getContext(thisArg, locals, options) {
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if (isOptions(thisArg)) {
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return getContext({}, locals, thisArg)
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}
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// ensure args are in the correct order
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if (isOptions(locals)) {
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return getContext(thisArg, options, locals)
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}
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const appContext = isApp(thisArg) ? thisArg.context : {}
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options = options || {}
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// if "options" is not handlebars options, merge it onto locals
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if (!isOptions(options)) {
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locals = Object.assign({}, locals, options)
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}
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// merge handlebars root data onto locals if specified on the hash
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if (isOptions(options) && options.hash.root === true) {
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locals = Object.assign({}, options.data.root, locals)
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}
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let context = Object.assign({}, appContext, locals, options.hash)
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if (!isApp(thisArg)) {
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context = Object.assign({}, thisArg, context)
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}
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if (isApp(thisArg) && thisArg.view && thisArg.view.data) {
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context = Object.assign({}, context, thisArg.view.data)
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}
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return context
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}
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module.exports = function dateHelper(str, pattern, options) {
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if (isOptions(pattern)) {
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options = pattern
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pattern = null
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}
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if (isOptions(str)) {
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options = str
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pattern = null
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str = null
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}
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// if no args are passed, return a formatted date
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if (str == null && pattern == null) {
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dayjs.locale("en")
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return dayjs().format("MMMM DD, YYYY")
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}
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const defaults = {lang: "en", date: new Date(str)}
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const opts = getContext(this, defaults, options)
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// set the language to use
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dayjs.locale(opts.lang || opts.language)
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return dayjs(new Date(str)).format(pattern)
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}
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