FormData polyfill on QTWebKit about formdata

[jimmywarting]

When you call method formData.get it will try to normalize the value

return map[name] ? normalizeValue(map[name][0]) : null

FormData/FormData.js

Lines 69 to 79 in f18bd6e

	function normalizeValue([value, filename]) {
	if (value instanceof Blob)
	// Should always returns a new File instance
	// console.assert(fd.get(x) !== fd.get(x))
	value = new File([value], filename, {
	type: value.type,
	lastModified: value.lastModified
	})
	return value
	}

The probable cause is that the window.File is not a constructor

I try to work around it by using Blob as a fallback and also assign File to window but for some reason it don't seem to do so for you..?

FormData/FormData.js

Lines 34 to 67 in f18bd6e

	// Fix so you can construct your own File
	try {
	new File([], '')
	} catch (a) {
	global.File = function(b, d, c) {
	const blob = new Blob(b, c)
	const t = c && void 0 !== c.lastModified ? new Date(c.lastModified) : new Date
	Object.defineProperties(blob, {
	name: {
	value: d
	},
	lastModifiedDate: {
	value: t
	},
	lastModified: {
	value: +t
	},
	toString: {
	value() {
	return '[object File]'
	}
	}
	})
	if (stringTag) {
	Object.defineProperty(blob, stringTag, {
	value: 'File'
	})
	}
	return blob
	}
	}

Could you try if File constructor exist in QTWebKit and maybe investigate why it aint able to set a tiny Blob polyfill to the global window?

[Enum1109]

Thank you for the reply.
Unfortunately, File constructor doesn't exist in QTWebKit.

[jimmywarting]

Unfortunately, File constructor doesn't exist in QTWebKit.

Not sure why this line does not work...

   global.File = function(b, d, c) {...}

Think that is something you need to figure out first.

[Enum1109]

Thank you for your prompt response. I'll keep digging......