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templatify.ts
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templatify.ts
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/* eslint-disable @typescript-eslint/no-var-requires */
const Handlebars = require("handlebars");
const fs = require("fs-extra");
const path = require("path");
const yaml = require("js-yaml");
const { t } = require("typy");
Handlebars.registerHelper("ifEquals", function(arg1, arg2, options) {
return arg1 === arg2 ? options.fn(this) : options.inverse(this);
});
function getNetworkNameForSubgraph() {
switch (process.env.SUBGRAPH) {
case "livepeer/arbitrum-one":
return "arbitrum-one";
case "livepeer/arbitrum-goerli":
return "arbitrum-goerli";
default:
return null;
}
}
(async () => {
const networksFilePath = path.join(__dirname, "networks.yaml");
const networks = yaml.load(
await fs.readFile(networksFilePath, { encoding: "utf-8" })
);
const networkName = process.env.NETWORK_NAME || getNetworkNameForSubgraph();
const network = t(networks, networkName).safeObject;
if (t(network).isFalsy) {
throw new Error(
'Please set either a "NETWORK_NAME" or a "SUBGRAPH" environment variable'
);
}
const subgraphTemplateFilePath = path.join(
__dirname,
"subgraph.template.yaml"
);
const source = await fs.readFile(subgraphTemplateFilePath, "utf-8");
const template = Handlebars.compile(source);
const result = template(network);
await fs.writeFile(path.join(__dirname, "subgraph.yaml"), result);
console.log("🎉 subgraph.yaml successfully generated");
})();