IE11: Function.prototype.toString: 'this' is not a Function object

[rejhgadellaa]

When I switched from rivets to tinybind, I encountered an error in IE11:

Function.prototype.toString: 'this' is not a Function object

I've done some googling and it looks like this is a known issue with Babel and Web Components:

https://github.com/babel/babel/issues/8915

In the thread, I found a workaround that works for me:

<!-- Polyfills for custom-elements -->
<script>if (this.customElements) try { customElements.define('built-in', document.createElement('p').constructor, { 'extends': 'p' }) } catch (a) { document.write('<script src="https://unpkg.com/@@ungap/custom-elements-builtin@0.2.7/min.js" crossorigin="anonymous" ><' + '/script>') } else document.write('<script src="https://unpkg.com/document-register-element@1.13.2/build/document-register-element.js" crossorigin="anonymous" ><' + '/script>');</script>

<!--
    On IE11, typeof HTMLElement === 'object',
    this breaks Babel 7 compilation of built in extension.
    Adding an adapter to add an intermediate constructor wrapping native HTMLElement to fix this issue
-->
<script>if (typeof HTMLElement === 'object') document.write('<script src="https://unpkg.com/custom-elements-es5-adapter@@1.0.0/custom-elements-es5-adapter.js" crossorigin="anonymous"><' + '/script>')</script>

Source: https://github.com/babel/babel/issues/8915#issuecomment-505274882

The issue is still open so not sure if tinybind can do anything about it? In any case, the README should probably mention that IE11 is not supported.

[blikblum]

In the documentation, says it should use the polyfill on IE11: https://blikblum.github.io/tinybind/docs/guide/#components

Internet Explorer requires the use of a compiler like babel to transpile the class as well to use the webcomponents polyfill

I will do an example

[karneaud]

Closing this issue due to inactivity