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Strip out Express typeof check from JSONP #66

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Strip out Express typeof check from JSONP #66

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5 changes: 5 additions & 0 deletions extension/js/background.js
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Original file line number Diff line number Diff line change
Expand Up @@ -121,6 +121,10 @@
return str.join('').slice(2, -2);
}

function removeTypeofGuard(s) {
return s.replace(/^typeof \S+ === 'function' && /, '');
}

function firstJSONCharIndex(s) {
var arrayIdx = s.indexOf('['),
objIdx = s.indexOf('{'),
Expand Down Expand Up @@ -434,6 +438,7 @@

// Get the substring up to the first "(", with any comments/whitespace stripped out
var firstBit = removeComments( text.substring(0,indexOfParen) ).trim() ;
firstBit = removeTypeofGuard(firstBit);
if ( ! firstBit.match(/^[a-zA-Z_$][\.\[\]'"0-9a-zA-Z_$]*$/) ) {
// The 'firstBit' is NOT a valid function identifier.
port.postMessage(['NOT JSON', 'first bit not a valid function name']) ;
Expand Down