TypeError with npm

[emiola]

Importing with npm in a svelte project using rollup, as soon as I invoke the constructor, I get:

Uncaught TypeError: ProgressBar is not a constructor

Any suggestions? Thanks.

[okrad]

Hi @emiola, can you provide your rollup configuration and a sample of your code?

[emiola]

Sure,

I used the sveltejs/template and just added rollup-plugin-postcss to the standard rollup configuration, to import directly the css file.

App.svelte:

<script>
  import ProgressBar from "@okrad/svelte-progressbar";
  import "@okrad/svelte-progressbar/dist/svelte-progressbar.css";

  const pb = new ProgressBar({
    target: document.getElementById("demo"),
    props: {
      series: 20
    }
  });
</script>

<div id="demo"></div>

rollup.config.js:

import svelte from 'rollup-plugin-svelte'
import resolve from 'rollup-plugin-node-resolve'
import commonjs from 'rollup-plugin-commonjs'
import livereload from 'rollup-plugin-livereload'
import { terser } from 'rollup-plugin-terser'
import postcss from 'rollup-plugin-postcss'

const production = !process.env.ROLLUP_WATCH

export default {
  input: 'src/main.js',
  output: {
    sourcemap: true,
    format: 'iife',
    name: 'app',
    file: 'public/bundle.js'
  },
  plugins: [
    svelte({
      // enable run-time checks when not in production
      dev: !production,
      // we'll extract any component CSS out into
      // a separate file — better for performance
      css: css => {
        css.write('public/bundle.css')
      }
    }),

    // If you have external dependencies installed from
    // npm, you'll most likely need these plugins. In
    // some cases you'll need additional configuration —
    // consult the documentation for details:
    // https://github.com/rollup/rollup-plugin-commonjs
    resolve({
      browser: true,
      dedupe: importee =>
        importee === 'svelte' || importee.startsWith('svelte/')
    }),
    commonjs(),

    // Watch the `public` directory and refresh the
    // browser on changes when not in production
    !production && livereload('public'),

    // If we're building for production (npm run build
    // instead of npm run dev), minify
    production && terser(),

    // to import css files
    postcss({
      plugins: []
    })
  ],
  watch: {
    clearScreen: false
  }
}

[okrad]

Ok, I cleaned up the code and followed the suggested format for components from https://github.com/sveltejs/component-template. I even updated the readme to better explain how to use the progress bar in a svelte app.

I published the latest version on npm, please update your code.

[emiola]

Awesome. Thank you so much!