Error when running on forEach

[daveisfera]

Here's the error:

test_value.js Transformation error (Cannot read property 'value' of undefined)
TypeError: Cannot read property 'value' of undefined
    at addMethodToClass (/Users/dlj/projects/numetric.other/func-to-class.js:107:43)
    at NodePath.root.find.forEach.path (/Users/dlj/projects/numetric.other/func-to-class.js:137:22)
    at __paths.forEach (/Users/dlj/.config/yarn/global/node_modules/jscodeshift/src/Collection.js:77:36)
    at Array.forEach (<anonymous>)
    at Collection.forEach (/Users/dlj/.config/yarn/global/node_modules/jscodeshift/src/Collection.js:76:18)
    at transformer (/Users/dlj/projects/numetric.other/func-to-class.js:137:6)

And here's the example file:

const AStore = function() {
    this.values = {};
};

ColorStore.prototype._get = function(value) {
    return this.values[value];
};

['get'].forEach(fn => {
    ColorStore.prototype[fn] = function() {
        return this[`_${fn}`].bind(this);
    };
});

module.exports = ColorStore;