60 lines
1.6 KiB
JavaScript
60 lines
1.6 KiB
JavaScript
import { ProtoError } from "../../errors.js";
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export function string(value) {
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if (typeof value === "string") {
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return value;
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}
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throw typeError(value, "string");
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}
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export function stringOpt(value) {
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if (value === null || value === undefined) {
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return undefined;
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}
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else if (typeof value === "string") {
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return value;
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}
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throw typeError(value, "string or null");
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}
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export function number(value) {
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if (typeof value === "number") {
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return value;
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}
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throw typeError(value, "number");
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}
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export function boolean(value) {
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if (typeof value === "boolean") {
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return value;
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}
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throw typeError(value, "boolean");
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}
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export function array(value) {
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if (Array.isArray(value)) {
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return value;
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}
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throw typeError(value, "array");
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}
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export function object(value) {
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if (value !== null && typeof value === "object" && !Array.isArray(value)) {
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return value;
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}
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throw typeError(value, "object");
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}
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export function arrayObjectsMap(value, fun) {
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return array(value).map((elemValue) => fun(object(elemValue)));
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}
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function typeError(value, expected) {
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if (value === undefined) {
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return new ProtoError(`Expected ${expected}, but the property was missing`);
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}
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let received = typeof value;
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if (value === null) {
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received = "null";
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}
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else if (Array.isArray(value)) {
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received = "array";
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}
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return new ProtoError(`Expected ${expected}, received ${received}`);
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}
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export function readJsonObject(value, fun) {
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return fun(object(value));
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}
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