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metamask-extension/development/mock-3box.js
Mark Stacey 5ee1291662
Prevent accidental use of globals (#8340)
Previously all browser globals were allowed to be used anywhere by
ESLint because we had set the `env` property to `browser` in the ESLint
config. This has made it easy to accidentally use browser globals
(e.g. #8338), so it has been removed. Instead we now have a short list
of allowed globals.

All browser globals are now accessed as properties on `window`.

Unfortunately this change resulted in a few different confusing unit
test errors, as some of our unit tests setup assumed that a particular
global would be used via `window` or `global`. In particular,
`window.fetch` didn't work correctly because it wasn't patched by the
AbortController polyfill (only `global.fetch` was being patched).
The `jsdom-global` package we were using complicated matters by setting
all of the JSDOM `window` properties directly on `global`, overwriting
the `AbortController` for example.

The `helpers.js` test setup module has been simplified somewhat by
removing `jsdom-global` and constructing the JSDOM instance manually.
The JSDOM window is set on `window`, and a few properties are set on
`global` as well as needed by various dependencies. `node-fetch` and
the AbortController polyfill/patch now work as expected as well,
though `fetch` is only available on `window` now.
2020-04-15 14:23:27 -03:00

66 lines
1.5 KiB
JavaScript

function delay (time) {
return new Promise((resolve) => setTimeout(resolve, time))
}
async function loadFromMock3Box (key) {
const res = await window.fetch('http://localhost:8889?key=' + key)
const text = await res.text()
return text.length ? JSON.parse(text) : null
}
async function saveToMock3Box (key, newDataAtKey) {
const res = await window.fetch('http://localhost:8889', {
method: 'POST',
body: JSON.stringify({
key,
data: newDataAtKey,
}),
})
return res.text()
}
class Mock3Box {
static openBox (address) {
this.address = address
return Promise.resolve({
onSyncDone: (cb) => {
setTimeout(cb, 200)
},
openSpace: async (spaceName, config) => {
const { onSyncDone } = config
this.spaceName = spaceName
setTimeout(onSyncDone, 150)
await delay(50)
return {
private: {
get: async (key) => {
await delay(50)
const res = await loadFromMock3Box(`${this.address}-${this.spaceName}-${key}`)
return res
},
set: async (key, data) => {
await saveToMock3Box(`${this.address}-${this.spaceName}-${key}`, data)
await delay(50)
return null
},
},
}
},
logout: () => {},
})
}
static async getConfig (address) {
const backup = await loadFromMock3Box(`${address}-metamask-metamaskBackup`)
return backup
? { spaces: { metamask: {} } }
: {}
}
}
module.exports = Mock3Box