mirror of
https://github.com/kremalicious/metamask-extension.git
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ae08035d5d
We want to convert NetworkController to TypeScript in order to be able to compare differences in the controller between in this repo and the core repo. To do this, however, we need to convert the dependencies of the controller to TypeScript. As a part of this effort, this commit converts `shared/modules/network.utils.js` to TypeScript, and also adds tests. Co-authored-by: Mark Stacey <markjstacey@gmail.com>
58 lines
1.7 KiB
TypeScript
58 lines
1.7 KiB
TypeScript
import { CHAIN_IDS, MAX_SAFE_CHAIN_ID } from '../constants/network';
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/**
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* Checks whether the given number primitive chain ID is safe.
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* Because some cryptographic libraries we use expect the chain ID to be a
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* number primitive, it must not exceed a certain size.
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*
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* @param chainId - The chain ID to check for safety.
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* @returns Whether the given chain ID is safe.
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*/
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export function isSafeChainId(chainId: unknown): boolean {
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return isSafeInteger(chainId) && chainId > 0 && chainId <= MAX_SAFE_CHAIN_ID;
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}
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/**
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* Checks whether the given value is a 0x-prefixed, non-zero, non-zero-padded,
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* hexadecimal string.
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*
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* @param value - The value to check.
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* @returns True if the value is a correctly formatted hex string,
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* false otherwise.
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*/
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export function isPrefixedFormattedHexString(value: unknown) {
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if (typeof value !== 'string') {
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return false;
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}
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return /^0x[1-9a-f]+[0-9a-f]*$/iu.test(value);
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}
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/**
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* Check if token detection is enabled for certain networks
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*
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* @param chainId - ChainID of network
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* @returns Whether the current network supports token detection
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*/
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export function isTokenDetectionEnabledForNetwork(chainId: string | undefined) {
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switch (chainId) {
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case CHAIN_IDS.MAINNET:
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case CHAIN_IDS.BSC:
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case CHAIN_IDS.POLYGON:
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case CHAIN_IDS.AVALANCHE:
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return true;
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default:
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return false;
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}
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}
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/**
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* Like {@link Number.isSafeInteger}, but types the input as a `number` if it is
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* indeed a safe integer.
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*
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* @param value - The value to check.
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* @returns True if the value is a safe integer, false otherwise.
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*/
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function isSafeInteger(value: unknown): value is number {
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return Number.isSafeInteger(value);
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}
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