env-prompt/src/index.ts

A dependency-free utility that prompts you for your project's environment variables.

import readline from "readline"
import fs from "fs"
import path from "path"
import { getOptionsFromEnvironment } from "lib/options"
import { StdIoReader } from "lib/std-io-reader"
import { CliPrompter } from "lib/cli"
import { analyzeEnvSourceCode } from "lib/env/lexer"
import { parseEnvTokens } from "lib/env/parser"
import { render } from "lib/env/renderer"
import { Merger } from "lib/env/merger"

const readLineFactory = () => readline.createInterface(process.stdin, process.stdout)
const stdIoReader = new StdIoReader(readLineFactory)
const cliPrompter = new CliPrompter(console, stdIoReader)
const merger = new Merger()
    .setCliPrompter(cliPrompter)
    .setAnalyzeEnvSourceCode(analyzeEnvSourceCode)
    .setParseEnvTokens(parseEnvTokens)
    .setRender(render)
    .setFs(fs)
    .setPath(path)

const main = async () => {
    try {
        const options = getOptionsFromEnvironment(process)
        await merger.merge(options)
    } catch (e) {
        cliPrompter.printError(e)
        process.exit(1)
    }
}
main()