validator.js
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	"use strict";

	Object.defineProperty(exports, "__esModule", {
	value: true
	});
	exports.OptionValidator = void 0;

	var _findSuggestion = require("./find-suggestion.js");

	class OptionValidator {
	constructor(descriptor) {
	this.descriptor = descriptor;
	}

	validateTopLevelOptions(options, TopLevelOptionShape) {
	const validOptionNames = Object.keys(TopLevelOptionShape);

	for (const option of Object.keys(options)) {
	if (!validOptionNames.includes(option)) {
	throw new Error(this.formatMessage(`'${option}' is not a valid top-level option.
	- Did you mean '${(0, _findSuggestion.findSuggestion)(option, validOptionNames)}'?`));
	}
	}
	}

	validateBooleanOption(name, value, defaultValue) {
	if (value === undefined) {
	return defaultValue;
	} else {
	this.invariant(typeof value === "boolean", `'${name}' option must be a boolean.`);
	}

	return value;
	}

	validateStringOption(name, value, defaultValue) {
	if (value === undefined) {
	return defaultValue;
	} else {
	this.invariant(typeof value === "string", `'${name}' option must be a string.`);
	}

	return value;
	}

	invariant(condition, message) {
	if (!condition) {
	throw new Error(this.formatMessage(message));
	}
	}

	formatMessage(message) {
	return `${this.descriptor}: ${message}`;
	}

	}

	exports.OptionValidator = OptionValidator;