33 lines
1.3 KiB
JavaScript
33 lines
1.3 KiB
JavaScript
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import * as canonicalize from 'canonicalize';
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import Encoder from './Encoder.js';
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/**
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* Class containing reusable JSON canonicalization operations using JSON Canonicalization Scheme (JCS).
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*/
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export default class JsonCanonicalizer {
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/**
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* Canonicalizes the given content as bytes.
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*/
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static canonicalizeAsBytes(content) {
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// We need to remove all properties with `undefined` as value so that JCS canonicalization will not produce invalid JSON.
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const contentWithoutUndefinedProperties = JsonCanonicalizer.removeAllUndefinedProperties(content);
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// @ts-expect-error because its a cjs package
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const canonicalizedString = canonicalize.default(contentWithoutUndefinedProperties);
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const contentBytes = Encoder.stringToBytes(canonicalizedString);
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return contentBytes;
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}
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/**
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* Removes all properties within the given object with `undefined` as value.
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*/
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static removeAllUndefinedProperties(content) {
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for (const key in content) {
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if (typeof content[key] === 'object') {
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JsonCanonicalizer.removeAllUndefinedProperties(content[key]);
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}
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else if (content[key] === undefined) {
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delete content[key];
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}
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}
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return content;
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}
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}
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//# sourceMappingURL=JsonCanonicalizer.js.map
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