escape-string-regexp dependency breaking IE11

[mattfrey-gr]

The version specified for the escape-string-regexp dependency contains an arrow function which is causing a syntax error in IE11 (sindresorhus/escape-string-regexp#18) escape-string-regexp^1.0.5 didn't have this problem so if you're not using the functionality in the newer versions downgrading it would be nice.

[ericgio]

@mattfrey-gr: thanks for the report. As noted in the linked issue, shouldn't this be handled by whatever tools the developer is using to transpile their code for the web (eg: webpack/babel)?

[ericgio]

Related issue with examples of how to configure webpack/babel: babel/babel-loader#171

[ericgio]

Small lib, so just including the function in this package for now :/ Fixed in v4.2.3

[mattfrey-gr]

Thank you @ericgio!!