A function that takes crappy invalid json and returns a valid one (y)

sanitizer.js

const sanitizeJSON = function (badJSON) {
    return badJSON
	.replace(/:\s*"([^"]*)"/g, function(match, p1) {
		return ': "' + p1.replace(/:/g, '@colon@') + '"';
	})
	.replace(/:\s*'([^']*)'/g, function(match, p1) {
		return ': "' + p1.replace(/:/g, '@colon@') + '"';
	})
	.replace(/(['"])?([a-z0-9A-Z_]+)(['"])?\s*:/g, '"$2": ')
	.replace(/@colon@/g, ':')
    .replace("\\'", "@singlequotes@")
    .replace(/(')/g, '"')
    .replace(/(@singlequotes@)/, "'")
    ;
    
}