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117
backend/node_modules/minimist-options/index.js
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117
backend/node_modules/minimist-options/index.js
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'use strict';
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const isPlainObject = require('is-plain-obj');
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const arrify = require('arrify');
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const kindOf = require('kind-of');
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const push = (obj, prop, value) => {
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if (!obj[prop]) {
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obj[prop] = [];
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}
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obj[prop].push(value);
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};
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const insert = (obj, prop, key, value) => {
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if (!obj[prop]) {
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obj[prop] = {};
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}
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obj[prop][key] = value;
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};
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const prettyPrint = output => {
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return Array.isArray(output) ?
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`[${output.map(prettyPrint).join(', ')}]` :
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kindOf(output) === 'string' ? JSON.stringify(output) : output;
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};
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const resolveType = value => {
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if (Array.isArray(value) && value.length > 0) {
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const [element] = value;
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return `${kindOf(element)}-array`;
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}
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return kindOf(value);
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};
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const normalizeExpectedType = (type, defaultValue) => {
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const inferredType = type === 'array' ? 'string-array' : type;
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if (arrayTypes.includes(inferredType) && Array.isArray(defaultValue) && defaultValue.length === 0) {
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return 'array';
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}
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return inferredType;
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};
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const passthroughOptions = ['stopEarly', 'unknown', '--'];
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const primitiveTypes = ['string', 'boolean', 'number'];
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const arrayTypes = primitiveTypes.map(t => `${t}-array`);
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const availableTypes = [...primitiveTypes, 'array', ...arrayTypes];
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const buildOptions = options => {
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options = options || {};
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const result = {};
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passthroughOptions.forEach(key => {
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if (options[key]) {
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result[key] = options[key];
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}
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});
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Object.keys(options).forEach(key => {
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let value = options[key];
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if (key === 'arguments') {
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key = '_';
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}
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// If short form is used
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// convert it to long form
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// e.g. { 'name': 'string' }
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if (typeof value === 'string') {
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value = {type: value};
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}
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if (isPlainObject(value)) {
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const props = value;
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const {type} = props;
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if (type) {
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if (!availableTypes.includes(type)) {
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throw new TypeError(`Expected type of "${key}" to be one of ${prettyPrint(availableTypes)}, got ${prettyPrint(type)}`);
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}
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if (arrayTypes.includes(type)) {
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const [elementType] = type.split('-');
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push(result, 'array', {key, [elementType]: true});
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} else {
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push(result, type, key);
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}
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}
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if ({}.hasOwnProperty.call(props, 'default')) {
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const {default: defaultValue} = props;
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const defaultType = resolveType(defaultValue);
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const expectedType = normalizeExpectedType(type, defaultValue);
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if (expectedType && expectedType !== defaultType) {
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throw new TypeError(`Expected "${key}" default value to be of type "${expectedType}", got ${prettyPrint(defaultType)}`);
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}
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insert(result, 'default', key, defaultValue);
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}
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arrify(props.alias).forEach(alias => {
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insert(result, 'alias', alias, key);
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});
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}
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});
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return result;
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};
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module.exports = buildOptions;
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module.exports.default = buildOptions;
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