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							- 'use strict';
 
- var $TypeError = require('es-errors/type');
 
- var NumberAdd = require('./add');
 
- var NumberUnaryMinus = require('./unaryMinus');
 
- // https://262.ecma-international.org/12.0/#sec-numeric-types-number-subtract
 
- module.exports = function NumberSubtract(x, y) {
 
- 	if (typeof x !== 'number' || typeof y !== 'number') {
 
- 		throw new $TypeError('Assertion failed: `x` and `y` arguments must be Numbers');
 
- 	}
 
- 	return NumberAdd(x, NumberUnaryMinus(y));
 
- };
 
 
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