now-flow/src/util/output/table.js

Add deployment workflows to Zeit now

const chalk = require('chalk')
const printf = require('printf')

const printLine = (data, sizes) =>
	data.reduce((line, col, i) => {
		return line + printf(`%-${sizes[i]}s`, col)
	}, '')

// Print a table
module.exports = (fieldNames = [], data = [], margins = []) => {
	// Compute size of each column
	const sizes = data
		.reduce((acc, row) => {
			return row.map((col, i) => {
				const currentMaxColSize = acc[i] || 0
				const colSize = (col && col.length) || 0
				return Math.max(currentMaxColSize, colSize)
			})
		}, fieldNames.map(col => col.length))
		// Add margin to all columns except the last
		.map((size, i) => (i < margins.length && size + margins[i]) || size)

	// Print header
	console.log(chalk.grey(printLine(fieldNames, sizes)))
	// Print content
	data.forEach(row => console.log(printLine(row, sizes)))
}