@tamgl/colyseus-schema/lib/encoding/assert.js

Binary state serializer with delta encoding for games

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.EncodeSchemaError = void 0;
exports.assertType = assertType;
exports.assertInstanceType = assertInstanceType;
class EncodeSchemaError extends Error {
}
exports.EncodeSchemaError = EncodeSchemaError;
function assertType(value, type, klass, field) {
    let typeofTarget;
    let allowNull = false;
    switch (type) {
        case "number":
        case "int8":
        case "uint8":
        case "int16":
        case "uint16":
        case "int32":
        case "uint32":
        case "int64":
        case "uint64":
        case "float32":
        case "float64":
            typeofTarget = "number";
            if (isNaN(value)) {
                console.log(`trying to encode "NaN" in ${klass.constructor.name}#${field}`);
            }
            break;
        case "bigint64":
        case "biguint64":
            typeofTarget = "bigint";
            break;
        case "string":
            typeofTarget = "string";
            allowNull = true;
            break;
        case "boolean":
            // boolean is always encoded as true/false based on truthiness
            return;
        default:
            // skip assertion for custom types
            // TODO: allow custom types to define their own assertions
            return;
    }
    if (typeof (value) !== typeofTarget && (!allowNull || (allowNull && value !== null))) {
        let foundValue = `'${JSON.stringify(value)}'${(value && value.constructor && ` (${value.constructor.name})`) || ''}`;
        throw new EncodeSchemaError(`a '${typeofTarget}' was expected, but ${foundValue} was provided in ${klass.constructor.name}#${field}`);
    }
}
function assertInstanceType(value, type, instance, field) {
    if (!(value instanceof type)) {
        throw new EncodeSchemaError(`a '${type.name}' was expected, but '${value && value.constructor.name}' was provided in ${instance.constructor.name}#${field}`);
    }
}
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