git ssb

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import { default as pull } from 'pull-stream'
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import fetch from 'isomorphic-fetch'
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export default class Util {
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  constructor(sbot) {
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    this.sbot = sbot
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  }
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  getBlob(blobId) {
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    function Utf8ArrayToStr(array) {
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      return new Promise((resolve, reject) => {
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        var bb = new Blob([array]);
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        var f = new FileReader();
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        f.onload = function(e) {
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            resolve(e.target.result);
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        };
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        f.readAsText(bb);
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      })
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    }
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    return new Promise((resolve, reject) => {
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      this.sbot.blobs.want(blobId).then(() => {
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        pull(
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          this.sbot.blobs.get(blobId),
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          pull.collect((err, values) => {
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            if (err) reject(err)
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            Promise.all(values.map(v => Utf8ArrayToStr(v))).then(s => s.join('')).then(resolve)
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          })
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        )
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      })
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    })
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  }
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  dereferenceUriOrSigil(uriOrSigil) {
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    if (uriOrSigil.startsWith('&')) {
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      return this.getBlob(uriOrSigil)
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    } else {
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      return fetch(uriOrSigil).then(response => response.text())
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    }
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  }
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}