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GeezerVison is showing github.com — fetching files renders invalid blob · Issue #145 · developit/unfetch

fetching files renders invalid blob #145

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#169
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fetching files renders invalid blob#145
#169
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Description

@skourismanolis
skourismanolis
opened on Oct 28, 2020
Issue body actions

How it should be

let e = await fetch('https://i.imgur.com/4AiXzf8.jpg')
// Response { type: "cors", url: "https://i.imgur.com/4AiXzf8.jpg", redirected: false, status: 200, ok: true, statusText: "OK", headers: // Headers, body: ReadableStream, bodyUsed: false }
await e.blob()
// Blob { size: 87363, type: "image/jpeg" }

How it is with unfetch

let e = await fetch('https://i.imgur.com/4AiXzf8.jpg')
// Object { ok: true, statusText: "OK", status: 200, url: "https://i.imgur.com/4AiXzf8.jpg", text: text(), json: json(), blob: blob(), clone: a(), headers: {…} }
await e.blob()
// Blob { size: 156997, type: "" }

Note how the blob's size is different and the type is missing.

That can also be confirmed by using FileReader.readAsDataURL() on the generated blob, the resulting file is invalid and cannot be opened.

Reacted by ELFrontEnd

Activity

  1. kg-currenxie commented on Dec 9, 2020

    @kg-currenxie
    kg-currenxie
    on Dec 9, 2020
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    Same :/

  2. qqilihq commented on Feb 15, 2021

    @qqilihq
    qqilihq
    on Feb 15, 2021
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    Any workarounds or attempts to fix this?

    The issue is obviously here:

    https://github.com/developit/unfetch/blob/master/src/index.mjs#L16

    To fix this, the XHR would probably need to be initialized with the proper responseType, which at first glance will require some deeper refactoring of the current structure.

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