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							- 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}.`);
 
- }
 
 
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