@graphql-tools/graphql/cjs/jsutils/formatList.js

Fork of GraphQL.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.andList = exports.orList = void 0;
const invariant_js_1 = require("./invariant.js");
/**
 * Given [ A, B, C ] return 'A, B, or C'.
 */
function orList(items) {
    return formatList('or', items);
}
exports.orList = orList;
/**
 * Given [ A, B, C ] return 'A, B, and C'.
 */
function andList(items) {
    return formatList('and', items);
}
exports.andList = andList;
function formatList(conjunction, items) {
    (0, invariant_js_1.invariant)(items.length !== 0);
    switch (items.length) {
        case 1:
            return items[0];
        case 2:
            return items[0] + ' ' + conjunction + ' ' + items[1];
    }
    const allButLast = items.slice(0, -1);
    const lastItem = items[items.length - 1];
    return allButLast.join(', ') + ', ' + conjunction + ' ' + lastItem;
}