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this prevents the need for 'unsafe-inline' in the CSP to talk to MM on Firefox
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| declare module 'metamask-inpage-provider' |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| /// <reference path="./metamaskInpageProvider.d.ts" /> | ||
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| import MetamaskInpageProvider from 'metamask-inpage-provider' | ||
| import LocalMessageDuplexStream from 'post-message-stream' | ||
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| // Be sure to give MM a chance to successfully inject its own stub | ||
| setTimeout(() => { | ||
| try { | ||
| // Don't clobber an existing MM stub | ||
| if (window && !window.ethereum) { | ||
| //#region verbatim from https://github.com/MetaMask/metamask-extension/issues/3133#issuecomment-631652083 | ||
| // setup background connection | ||
| const metamaskStream = new LocalMessageDuplexStream({ | ||
| name: 'inpage', | ||
| target: 'contentscript' | ||
| }) | ||
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| // compose the inpage provider | ||
| const inpageProvider = new MetamaskInpageProvider(metamaskStream) | ||
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| // set a high max listener count to avoid unnecesary warnings | ||
| inpageProvider.setMaxListeners(100) | ||
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| // Work around for web3@1.0 deleting the bound `sendAsync` but not the unbound | ||
| // `sendAsync` method on the prototype, causing `this` reference issues | ||
| const ethereum = new Proxy(inpageProvider, { | ||
| // straight up lie that we deleted the property so that it doesnt | ||
| // throw an error in strict mode | ||
| deleteProperty: () => true | ||
| }) | ||
| //#endregion | ||
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| window.ethereum = ethereum | ||
| } | ||
| } catch (e) { | ||
| console.error('metamaskInpageProvider:', e) | ||
| } | ||
| }, 0) |
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