@selfage/observable/copier.js

Runtime lib for generated observables.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.copyObservable = exports.OBSERVABLE_COPIER = exports.copyField = exports.popArrayUntilTargetLength = exports.nullifyArray = exports.checkArrayNonNull = exports.nullifyOutput = exports.checkSourceNonNull = void 0;
const copier_1 = require("@selfage/message/copier");
const assembler_1 = require("./assembler");
function checkSourceNonNull(source) {
    return Boolean(source);
}
exports.checkSourceNonNull = checkSourceNonNull;
function nullifyOutput() {
    return undefined;
}
exports.nullifyOutput = nullifyOutput;
function checkArrayNonNull(sourceField) {
    return Boolean(sourceField);
}
exports.checkArrayNonNull = checkArrayNonNull;
function nullifyArray(ret, fieldName) {
    ret[fieldName] = undefined;
}
exports.nullifyArray = nullifyArray;
function popArrayUntilTargetLength(retArrayField, targetLength) {
    for (let i = retArrayField.length; i > targetLength; i--) {
        retArrayField.pop();
    }
}
exports.popArrayUntilTargetLength = popArrayUntilTargetLength;
function copyField(sourceField) {
    return sourceField;
}
exports.copyField = copyField;
exports.OBSERVABLE_COPIER = new assembler_1.ObservableAssembler(checkSourceNonNull, nullifyOutput, checkArrayNonNull, nullifyArray, popArrayUntilTargetLength, copyField, copyField, copier_1.copyMessage);
function copyObservable(from, descriptor, to) {
    return exports.OBSERVABLE_COPIER.processObservableType(from, descriptor, to);
}
exports.copyObservable = copyObservable;
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