ie11 - Object doesn't support property or method 'assign'

[nitmpez]

C3 version: 0.7.9 D3 version: 5.12.0 Browser: IE11 OS: Windows 10

https://jsfiddle.net/a8qcbwfz/1/

The error appears to be introduced from going from 0.7.8 to 0.7.9.

The legend issue noted in the screen shot, I'm unsure on, as I went all the way back to 0.6.12 and it still occurred. Basically clicking the legend to hide and then clicking the legend to unhide the data doesn't work in IE11.

[panthony]

@nitmpez If this is blocker for you you can, while waiting for a new release, add this piece of code in your own javascript before important c3:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign#Polyfill

if (typeof Object.assign !== 'function') {
    // Must be writable: true, enumerable: false, configurable: true
    Object.defineProperty(Object, "assign", {
        value: function assign(target, varArgs) { // .length of function is 2
            'use strict';
            if (target === null || target === undefined) {
                throw new TypeError('Cannot convert undefined or null to object');
            }

             var to = Object(target);

             for (var index = 1; index < arguments.length; index++) {
                var nextSource = arguments[index];

                 if (nextSource !== null && nextSource !== undefined) {
                    for (var nextKey in nextSource) {
                        // Avoid bugs when hasOwnProperty is shadowed
                        if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
                            to[nextKey] = nextSource[nextKey];
                        }
                    }
                }
            }
            return to;
        },
        writable: true,
        configurable: true
    });
}

[nitmpez]

Just wanted to say thank you for the quick turn around and looking at this.