collectable/lib/commonjs/functions/set.js

An all-you-can-eat buffet of high-performance immutable/persistent data structures

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const core_1 = require("@collectable/core");
const map_1 = require("@collectable/map");
const internals_1 = require("../internals");
function setIn(path, value, collection) {
    core_1.batch.start();
    collection = setDeep(collection, path, 0, value);
    core_1.batch.end();
    return collection;
}
exports.setIn = setIn;
function setDeep(collection, path, keyidx, value) {
    var key = path[keyidx], type;
    core_1.batch.start();
    if (core_1.isCollection(collection) && (type = collection['@@type'], internals_1.isIndexable(type)) && type.verifyKey(key, collection)) {
        return keyidx === path.length - 1
            ? type.set(key, value, collection)
            : type.update(key, c => setDeep(c, path, keyidx + 1, value), collection);
    }
    return map_1.fromArray([[key, keyidx === path.length - 1 ? value : setDeep(void 0, path, keyidx + 1, value)]]);
}

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