@selfage/observable/merger.js

Runtime lib for generated observables.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.mergeObservable = exports.OBSERVABLE_MERGER = exports.mergeField = exports.noop = exports.checkArrayNonNull = exports.acceptOutput = exports.checkSourceNonNull = void 0;
const assembler_1 = require("./assembler");
const merger_1 = require("@selfage/message/merger");
function checkSourceNonNull(source) {
    return Boolean(source);
}
exports.checkSourceNonNull = checkSourceNonNull;
function acceptOutput(output) {
    return output;
}
exports.acceptOutput = acceptOutput;
function checkArrayNonNull(sourceField) {
    return Boolean(sourceField);
}
exports.checkArrayNonNull = checkArrayNonNull;
function noop() { }
exports.noop = noop;
function mergeField(sourceField, type, outputField) {
    if (sourceField !== undefined) {
        return sourceField;
    }
    else {
        return outputField;
    }
}
exports.mergeField = mergeField;
exports.OBSERVABLE_MERGER = new assembler_1.ObservableAssembler(checkSourceNonNull, acceptOutput, checkArrayNonNull, noop, noop, mergeField, mergeField, merger_1.mergeMessage);
function mergeObservable(from, descriptor, to) {
    return exports.OBSERVABLE_MERGER.processObservableType(from, descriptor, to);
}
exports.mergeObservable = mergeObservable;
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