import { YError } from './yerror.js'; import { parseCommand } from './parse-command.js'; const positionName = ['first', 'second', 'third', 'fourth', 'fifth', 'sixth']; export function argsert(arg1, arg2, arg3) { function parseArgs() { return typeof arg1 === 'object' ? [{ demanded: [], optional: [] }, arg1, arg2] : [ parseCommand(`cmd ${arg1}`), arg2, arg3, ]; } try { let position = 0; const [parsed, callerArguments, _length] = parseArgs(); const args = [].slice.call(callerArguments); while (args.length && args[args.length - 1] === undefined) args.pop(); const length = _length || args.length; if (length < parsed.demanded.length) { throw new YError(`Not enough arguments provided. Expected ${parsed.demanded.length} but received ${args.length}.`); } const totalCommands = parsed.demanded.length + parsed.optional.length; if (length > totalCommands) { throw new YError(`Too many arguments provided. Expected max ${totalCommands} but received ${length}.`); } parsed.demanded.forEach(demanded => { const arg = args.shift(); const observedType = guessType(arg); const matchingTypes = demanded.cmd.filter(type => type === observedType || type === '*'); if (matchingTypes.length === 0) argumentTypeError(observedType, demanded.cmd, position); position += 1; }); parsed.optional.forEach(optional => { if (args.length === 0) return; const arg = args.shift(); const observedType = guessType(arg); const matchingTypes = optional.cmd.filter(type => type === observedType || type === '*'); if (matchingTypes.length === 0) argumentTypeError(observedType, optional.cmd, position); position += 1; }); } catch (err) { console.warn(err.stack); } } function guessType(arg) { if (Array.isArray(arg)) { return 'array'; } else if (arg === null) { return 'null'; } return typeof arg; } function argumentTypeError(observedType, allowedTypes, position) { throw new YError(`Invalid ${positionName[position] || 'manyith'} argument. Expected ${allowedTypes.join(' or ')} but received ${observedType}.`); }