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Fixing TypeError: Invalid calling object in Edge #70

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Fixing TypeError: Invalid calling object in Edge #70

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6 changes: 5 additions & 1 deletion src/client-oauth2.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,11 @@ var Querystring = require('querystring')
var Url = require('url')
var defaultRequest = require('./request')

var btoa = typeof Buffer === 'function' ? btoaBuffer : window.btoa
// For some reason in some cases invoking window.btoa without binding causes TypeError 'Invalid calling object' in IE and Edge
// See for example https://github.com/tus/tus-js-client/issues/77
// I could not reproduce it in tests, but it did fail in a production project
// Binding fixes it
var btoa = typeof Buffer === 'function' ? btoaBuffer : window.btoa.bind(window)

/**
* Export `ClientOAuth2` class.
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