#!/usr/bin/env node
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const fs = require('fs')
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const path = require('path')
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const readline = require('readline')
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const flat = require('./index')
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const filepath = process.argv.slice(2)[0]
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if (filepath) {
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// Read from file
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const file = path.resolve(process.cwd(), filepath)
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fs.accessSync(file, fs.constants.R_OK) // allow to throw if not readable
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out(require(file))
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} else if (process.stdin.isTTY) {
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usage(0)
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} else {
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// Read from newline-delimited STDIN
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const lines = []
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readline.createInterface({
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input: process.stdin,
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output: process.stdout,
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terminal: false
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})
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.on('line', line => lines.push(line))
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.on('close', () => out(JSON.parse(lines.join('\n'))))
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}
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function out (data) {
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process.stdout.write(JSON.stringify(flat(data), null, 2))
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}
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function usage (code) {
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console.log(`
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Usage:
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flat foo.json
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cat foo.json | flat
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`)
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process.exit(code || 0)
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}
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