@launchql/migrate/esm/stream-sql.js

PostgreSQL Migration Tools

import { getSpawnEnvWithPg } from '@launchql/types';
import { spawn } from 'child_process';
import { Readable } from 'stream';
function setArgs(config) {
    const args = [
        '-U', config.user,
        '-h', config.host,
        '-d', config.database
    ];
    if (config.port) {
        args.push('-p', String(config.port));
    }
    return args;
}
// Converts a string to a readable stream (replaces streamify-string)
function stringToStream(text) {
    const stream = new Readable({
        read() {
            this.push(text);
            this.push(null);
        }
    });
    return stream;
}
export async function streamSql(config, sql) {
    const args = setArgs(config);
    return new Promise((resolve, reject) => {
        const sqlStream = stringToStream(sql);
        const proc = spawn('psql', args, {
            env: getSpawnEnvWithPg(config)
        });
        sqlStream.pipe(proc.stdin);
        proc.on('close', (code) => {
            resolve();
        });
        proc.on('error', (error) => {
            reject(error);
        });
        proc.stderr.on('data', (data) => {
            reject(new Error(data.toString()));
        });
    });
}