3.0.19 and SvelteKit v1.0.0-next.169 - Failed to load module for SSR: /src/lib/stores/datepicker

[nstuyvesant]

Related to #126 but for svelte-calendar@3.0.19.

Upgraded svelte-calender@2.0.4 to 3.0.19 in my SvelteKit v1.0.0-next.169 project.

What seems to have been resolved...
#127
#125

Now getting:

500
failed to load module for ssr: /src/lib/stores/datepicker
Error: failed to load module for ssr: /src/lib/stores/datepicker
at instantiateModule (/Users/nates/dev/shy-svelte/node_modules/vite/dist/node/chunks/dep-874085d4.js:75059:15)

I do not have a /src/lib/stores folder in my project. Seems like svelte-calendar should be looking in node_modules/svelte-calendar/stores instead.

[jonathangreenemeier-vizio]

Hey @nstuyvesant - thanks. I'm working thru these issues with sveltekit compatibility as I, too, would like this to work well with the new kit platform.

I'm attempting to move the experimentation to a @next dist-tag right now. Will update you when/if things are resolved.

[jonathangreenemeier-vizio]

It is a bit odd, though. I am seeing a different error than you with 3.0.19 in a svelte-kit app. My error looks more like this:

11:39:24 AM [vite] Error when evaluating SSR module /src/routes/index.svelte:
Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: C:\Users\6E\kit-test\node_modules\svelte-calendar\index.js
require() of ES modules is not supported.
require() of C:\Users\6E\kit-test\node_modules\svelte-calendar\index.js from C:\Users\6E\kit-test\node_modules\vite\dist\node\chunks\dep-874085d4.js is an ES module file as it is a .js file whose nearest parent package.json contains "type": "module" which defines all .js files in that package scope as ES modules.
Instead rename index.js to end in .cjs, change the requiring code to use import(), or remove "type": "module" from C:\Users\6E\kit-test\node_modules\svelte-calendar\package.json.

    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1080:13)
    at Module.load (internal/modules/cjs/loader.js:928:32)
    at Function.Module._load (internal/modules/cjs/loader.js:769:14)
    at Module.require (internal/modules/cjs/loader.js:952:19)
    at require (internal/modules/cjs/helpers.js:88:18)
    at nodeRequire (C:\Users\6E\kit-test\node_modules\vite\dist\node\chunks\dep-874085d4.js:75135:17)
    at ssrImport (C:\Users\6E\kit-test\node_modules\vite\dist\node\chunks\dep-874085d4.js:75077:20)
    at eval (/src/routes/index.svelte:7:37)
    at async instantiateModule (C:\Users\6E\kit-test\node_modules\vite\dist\node\chunks\dep-874085d4.js:75120:9)

[jonathangreenemeier-vizio]

@nstuyvesant - Could you please try updating to svelte-calendar@next and re-testing on a fresh svelte-kit app? You may need to update your svelte.config.js to the following (adding the optimizeDeps property):

import preprocess from 'svelte-preprocess';

/** @type {import('@sveltejs/kit').Config} */
const config = {
	// Consult https://github.com/sveltejs/svelte-preprocess
	// for more information about preprocessors
	preprocess: preprocess(),

	kit: {
		// hydrate the <div id="svelte"> element in src/app.html
		target: '#svelte',
    vite: {
      optimizeDeps: {
        include: ['just-throttle','dayjs'],
      },
    }
	}
};

export default config;

[nstuyvesant]

Will give it a try and let you know my results - thanks!

[nstuyvesant]

Installing svelte-calendar@next (3.0.26) with the additions to svelte.config.js's vite.optimizeDeps.include gets rid of the SSR error. When I run the dev server, I can bring up the datepicker but the behavior is different from 2.04 so I may need to look over the examples to get it to work the same way it did before. I can show the calendar and select the date which then enlarges but does not dismiss the calendar. I'm using Safari 14.1.2 on macOS 11.6 but Chrome behaved the same way.

[jonathangreenemeier-vizio]

I'm curious if you see the same behavior on the demo/docs site https://6edesign.github.io/svelte-calendar/ ?

I have not seen the behavior you're describing with the Datepicker component. The InlineCalendar component does currently behave this way, though.

[6eDesign]

If you can, @nstuyvesant, please provide the code you're using to implement the Datepicker so I can try to reproduce.

v3.0.0 does introduce many breaking changes but I think they're all for the better (either immediately or because they will aid in adding new functionality later [time pickers, date ranges, etc]).

[6eDesign]

Closing this issue for the time being. Feel free to open new issues with any additional problems you run into. Thanks for helping me test out the new v3 refactor.

[nstuyvesant]

Here's the Svelte component where I use the Datepicker. I wonder if the differences we experience may be related to typescript.

<script lang="ts">
  import { Datepicker } from 'svelte-calendar'
  import { Icon } from 'sveltestrap'
  import { DateDayOption, DateMonthOption, DateWeekdayOption, DateYearOption } from '../enums'
  import { classes, locations, teachers, schedule, findParentRecord } from '../stores'
  import AddToCalendar from '$lib/AddToCalendar.svelte'
  import DialogClass from '$lib/DialogClass.svelte'
  import DialogLocation from '$lib/DialogLocation.svelte'
  import DialogTeacher from '$lib/DialogTeacher.svelte'
  import ButtonScheduledClass from '$lib/ButtonScheduledClass.svelte'

  // Preset filters to generic values
  let classId = -1
  let day = -1
  let locationId = -1
  let teacherId = -1
  let timeOfDay = -1

  const start = new Date()
  start.setHours(0,0,0,0)
  let selectedDate = new Date(start)
  const dayRowDateOptions = { weekday: DateWeekdayOption.Long, month: DateMonthOption.Long, day: DateDayOption.Numeric }
  const datePickerOptions = { weekday: DateWeekdayOption.Long, month: DateMonthOption.Long, day: DateDayOption.Numeric, year: DateYearOption.Numeric }

  function addDays(days: number): void {
    const d = new Date(selectedDate)
    d.setDate(d.getDate() + days)
    if (d >= start) {
      selectedDate = new Date(d)
    }
  }

  const prevWeek = () => addDays(-7)
  const nextWeek = () => addDays(7)

  function getDateTime(targetDate, time: string): Date {
    const d = new Date(targetDate)
    d.setHours(+time.substring(0,2), +time.substring(3,5), 0, 0)
    return d
  }

  function inSession(eventDate: Date, startTime: string, endTime: string): boolean {
    const now = new Date()
    return now >= getDateTime(eventDate, startTime) && now <= getDateTime(eventDate, endTime)
  }
 
  function thisWeek(thisDate: Date): Date[] {
    const weekArray = []
    for (let day = 1; day <= 7; day++) {
      const d = new Date(thisDate)
      d.setDate(d.getDate() - (d.getDay() - day + 1))

      // If a date is in the past, move it forward to next week's date
      const today = new Date()
      today.setHours(0,0,0,0)
      if (d < today) d.setDate(d.getDate() + 7)

      weekArray.push(d)
    }
    return weekArray
  }

  function search(scheduledClass){
    return Object.keys(this).every(key => {
      if(this[key] == -1) {
        return true
      }
      return scheduledClass[key] == this[key]
    })
  }

  $: selectedDateString = selectedDate.toLocaleDateString('en-us', datePickerOptions)
  $: datesInView = thisWeek(selectedDate)
  $: filteredList = $schedule.filter(search, {
    day,
    classId,
    locationId,
    teacherId,
    timeOfDay
  })
</script>

<template>
  <table class="table table-striped">
    <thead>
      <tr>
        <th colspan="5" class="align-middle p-3">
          <div class="row justify-content-center">
            <div class="col-auto">
              <div class="btn-group" role="group" aria-label="Week Picker">
                <button on:click={prevWeek} class="btn btn-sm btn-secondary"><Icon name="caret-left"/></button>
                <Datepicker bind:selected={selectedDate} {start} formatted="today"><button class="btn btn-sm btn-secondary date-picker">{selectedDateString}</button></Datepicker>
                <button on:click={nextWeek} class="btn btn-sm btn-secondary"><Icon name="caret-right"/></button>
              </div>
            </div>
          </div>
        </th>
      </tr>
      <tr class="filters">
        <th class="ps-0" scope="col">
          When<br/>
          <select bind:value={day} class="form-select form-select-sm bg-secondary mb-1" aria-label="Day of the week">
            <optgroup>
              <option value={-1} selected>All days</option>
            </optgroup>
            <optgroup>
              <option value={1}>Sunday</option>
              <option value={2}>Monday</option>
              <option value={3}>Tuesday</option>
              <option value={4}>Wednesday</option>
              <option value={5}>Thursday</option>
              <option value={6}>Friday</option>
              <option value={7}>Saturday</option>
            </optgroup>
          </select>
          {#if false}
            <select bind:value={timeOfDay} class="form-select form-select-sm bg-secondary" aria-label="Time of day">
              <optgroup>
                <option value={-1} selected>All times</option>
              </optgroup>
              <optgroup>
                <option value="morning">Morning</option>
                <option value="afternoon">Afternoon</option>
                <option value="evening">Evening</option>
              </optgroup>
            </select>
          {/if}
        </th>
        <th scope="col">
          Class<br/>
          <select bind:value={classId} class="form-select form-select-sm bg-secondary" aria-label="Time of day">
            <optgroup>
              <option value={-1} selected>All</option>
            </optgroup>
            <optgroup>
              {#each $classes as course}
                <option value={course.id}>{course.name}</option>
              {/each}
            </optgroup>
          </select>
        </th>
        <th scope="col" colspan="2">
          Instructor<br/>
          <select bind:value={teacherId} class="form-select form-select-sm bg-secondary" aria-label="Instructor">
            <optgroup>
              <option value={-1} selected>All</option>
            </optgroup>
            <optgroup>
              {#each $teachers as teacher}
                <option value={teacher.id}>{teacher.name}</option>
              {/each}
            </optgroup>
          </select>
        </th>
        <th class="pe-0" scope="col">
          Location<br/>
          <select bind:value={locationId} class="form-select form-select-sm bg-secondary" aria-label="Instructor">
            <optgroup>
              <option value={-1} selected>All</option>
            </optgroup>
            <optgroup>
              {#each $locations as location}
                <option value={location.id}>{location.name}</option>
              {/each}
            </optgroup>
          </select>
        </th>
      </tr>
    </thead>
    <tbody class="border">
      {#each filteredList as scheduledClass, i}
        {#if i == 0 || (filteredList[i-1] !== undefined && scheduledClass.day != filteredList[i-1].day)}
          <tr>
            <th class="bg-secondary" colspan="5">{datesInView[scheduledClass.day-1].toLocaleString('en-US', dayRowDateOptions)}</th>
          </tr>
        {/if}
        <tr>
          <td class="align-middle">
            <AddToCalendar showTimes={true} subject={`${scheduledClass.className} with ${scheduledClass.teacherName}`} description={scheduledClass.classDescription} location={scheduledClass.locationName} eventDate={datesInView[scheduledClass.day-1]} startTime={scheduledClass.startTime} endTime={scheduledClass.endTime} />
          </td>
          <td class="align-middle">
            <DialogClass alt="Class details" classRecord={findParentRecord($classes, scheduledClass.classId)} canceled={scheduledClass.canceled}/>
          </td>
          <td class="align-middle">
            <DialogTeacher alt="Teacher details" teacher={findParentRecord($teachers, scheduledClass.teacherId)} canceled={scheduledClass.canceled}/>
          </td>
          <td class="align-middle text-center">
            <ButtonScheduledClass scheduledClassId={scheduledClass.id} canceled={scheduledClass.canceled} showJoin={scheduledClass.locationId == 5 && inSession(datesInView[scheduledClass.day-1], scheduledClass.startTime, scheduledClass.endTime)} />
          </td>
          <td class="align-middle">
            <DialogLocation alt="Location details" location={findParentRecord($locations, scheduledClass.locationId)} canceled={scheduledClass.canceled}/>
          </td>
        </tr>
      {/each}
    </tbody>
  </table>
</template>

<style lang="scss">
  .filters {
    vertical-align: top;
  }

  // Workaround because Datepicker has containing divs and doesn't look good in input group
  .date-picker {
    border-radius: 0;
  }
</style>

[nstuyvesant]

Just tried creating a new SvelteKit demo project with the adjustment to the svelte.config.js and adding the Datepicker to the /routes/index.svelte and it worked although I got a warning in VS Code that the formatted property is required (when using the documented example of <Datepicker /> so I used <Datepicker formatted="today" />.

[6eDesign]

Ok formatted does not need to be a required property. I can change that.

For your more complex example could you try following the custom trigger example in the docs? You're missing the in/out actions on your custom trigger.