@bbachain/token-registry
Version:
BBAChain Token Registry
100 lines • 7.83 kB
JavaScript
import { fetch } from 'cross-fetch';
import tokenlist from './../tokens/bbachain.tokenlist.json';
export var ENV;
(function (ENV) {
ENV[ENV["Mainnet"] = 101] = "Mainnet";
ENV[ENV["Testnet"] = 102] = "Testnet";
})(ENV || (ENV = {}));
export const CLUSTER_SLUGS = {
mainnet: ENV.Mainnet,
testnet: ENV.Testnet,
};
export class GitHubTokenListResolutionStrategy {
constructor() {
this.repositories = [
'https://raw.githubusercontent.com/bbachain/token-registry/main/src/tokens/bbachain.tokenlist.json',
];
this.resolve = () => {
return queryJsonFiles(this.repositories);
};
}
}
export class CDNTokenListResolutionStrategy {
constructor() {
this.repositories = [
// 'https://cdn.jsdelivr.net/gh/bbachain/token-registry@latest/src/tokens/bbachain.tokenlist.json',
'https://cdn.jsdelivr.net/npm/@bbachain/token-registry@latest/dist/module/tokens/bbachain.tokenlist.json',
];
this.resolve = () => {
return queryJsonFiles(this.repositories);
};
}
}
const queryJsonFiles = async (files) => {
const responses = (await Promise.all(files.map(async (repo) => {
try {
const response = await fetch(repo);
const json = (await response.json());
return json;
}
catch {
console.info(`@bbachain/token-registry: falling back to static repository.`);
return tokenlist;
}
})));
return responses
.map((tokenlist) => tokenlist.tokens || [])
.reduce((acc, arr) => acc.concat(arr), []);
};
export var Strategy;
(function (Strategy) {
Strategy["GitHub"] = "GitHub";
Strategy["Static"] = "Static";
Strategy["CDN"] = "CDN";
})(Strategy || (Strategy = {}));
export class StaticTokenListResolutionStrategy {
constructor() {
this.resolve = () => {
return tokenlist.tokens || [];
};
}
}
export class TokenListProvider {
constructor() {
this.resolve = async (strategy = Strategy.CDN) => {
return new TokenListContainer(await TokenListProvider.strategies[strategy].resolve());
};
}
}
TokenListProvider.strategies = {
[Strategy.GitHub]: new GitHubTokenListResolutionStrategy(),
[Strategy.Static]: new StaticTokenListResolutionStrategy(),
[Strategy.CDN]: new CDNTokenListResolutionStrategy(),
};
export class TokenListContainer {
constructor(tokenList) {
this.tokenList = tokenList;
this.filterByTag = (tag) => {
return new TokenListContainer(this.tokenList.filter((item) => (item.tags || []).includes(tag)));
};
this.filterByChainId = (chainId) => {
return new TokenListContainer(this.tokenList.filter((item) => item.chainId === chainId));
};
this.excludeByChainId = (chainId) => {
return new TokenListContainer(this.tokenList.filter((item) => item.chainId !== chainId));
};
this.excludeByTag = (tag) => {
return new TokenListContainer(this.tokenList.filter((item) => !(item.tags || []).includes(tag)));
};
this.filterByClusterSlug = (slug) => {
if (slug in CLUSTER_SLUGS) {
return this.filterByChainId(CLUSTER_SLUGS[slug]);
}
throw new Error(`Unknown slug: ${slug}, please use one of ${Object.keys(CLUSTER_SLUGS)}`);
};
this.getList = () => {
return this.tokenList;
};
}
}
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