vscode-pull-request-github/scripts/preprocess-gql.js at main · KLevy13/vscode-pull-request-github · GitHub

44 lines (35 loc) · 1.27 KB

const fs = require('fs');

const minimist = require('minimist');

const gqlLoader = require('graphql-tag/loader');

function printUsage(consoleFn, exitCode) {

consoleFn(`Usage: bin/preprocess-gql --in [filename] --out [filename]

Preprocess a file containing GraphQL queries into a *.js module consistently

with the way that Webpack will transpile it at build time.

Options:

--help, -h Display this message.

--in, -i [filename] Read GraphQL queries from the file at [filename].

--out, -o [filename] Emit JavaScript source to the file at [filename].

`);

process.exit(exitCode);

}

const argv = minimist(process.argv.slice(2), {

string: ['in', 'out'],

boolean: ['help'],

alias: { h: 'help', i: 'in', o: 'out' },

unknown: param => {

console.error(`Unrecognized command-line argument: ${param}\n`);

printUsage(console.error, 1);

});

if (argv.help) {

printUsage(console.log, 0);

}

const inFilename = argv.in;

const outFilename = argv.out;

if (!inFilename || !outFilename) {

console.error('Both --in and --out parameters are required.\n');

printUsage(console.error, 1);

}

const querySource = fs.readFileSync(inFilename, { encoding: 'utf8' });

const jsSource = gqlLoader.call({ cacheable() {} }, querySource);

fs.writeFileSync(outFilename, jsSource, { encoding: 'utf8' });

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