@ledgerhq/coin-stellar/lib/polyfill.js

Ledger Stellar Coin integration

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.unpatchHermesTypedArrays = exports.patchHermesTypedArraysIfNeeded = void 0;
const logs_1 = require("@ledgerhq/logs");
/*
 * This whole patch thing is messy:
 * It's goal is to: Fix error when sending a token transaction in Stellar
 * It originally was in ledger-mobile polyfill.ts (https://github.com/LedgerHQ/ledger-live/pull/9687)
 * But globally patching is not a good idea, and broke the polkadot sdk
 */
// Save original methods once at app startup
const OriginalTypedArrayMethods = {
    subarray: Uint8Array.prototype.subarray,
    slice: Uint8Array.prototype.slice,
    map: Uint8Array.prototype.map,
    filter: Uint8Array.prototype.filter,
};
// Track whether we actually patched
let hermesTypedArrayPatched = false;
function patchHermesTypedArraysIfNeeded() {
    if (global.HermesInternal && !hermesTypedArrayPatched) {
        try {
            (0, logs_1.log)("coin:stellar", "🔵 Patching TypedArray because of Hermes bug");
            // Only require the module when we're actually running on Hermes
            // eslint-disable-next-line @typescript-eslint/no-var-requires
            const fixHermesTypedArrayBug = require("@exodus/patch-broken-hermes-typed-arrays");
            fixHermesTypedArrayBug();
            hermesTypedArrayPatched = true;
        }
        catch {
            (0, logs_1.log)("coin:stellar", "Failed to patch typed arrays");
        }
    }
}
exports.patchHermesTypedArraysIfNeeded = patchHermesTypedArraysIfNeeded;
function unpatchHermesTypedArrays() {
    if (hermesTypedArrayPatched) {
        const TypedArray = Object.getPrototypeOf(Uint8Array);
        TypedArray.prototype.subarray = OriginalTypedArrayMethods.subarray;
        TypedArray.prototype.slice = OriginalTypedArrayMethods.slice;
        TypedArray.prototype.map = OriginalTypedArrayMethods.map;
        TypedArray.prototype.filter = OriginalTypedArrayMethods.filter;
        (0, logs_1.log)("coin:stellar", "🟢 Reverted TypedArray methods to originals");
        hermesTypedArrayPatched = false; // reset
    }
}
exports.unpatchHermesTypedArrays = unpatchHermesTypedArrays;
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