@xmtp/content-type-primitives/dist/index.js

Primitives for building custom XMTP content types

/**
 * Compares two content type IDs for equality
 *
 * @param a - First content type ID
 * @param b - Second content type ID
 * @returns True if the content type IDs are equal
 */
const contentTypesAreEqual = (a, b) => a.authorityId === b.authorityId && a.typeId === b.typeId;
/**
 * Converts a content type ID to a string
 *
 * @param contentType - Content type ID
 * @returns String representation of the content type ID
 */
const contentTypeToString = (contentType) => `${contentType.authorityId}/${contentType.typeId}:${contentType.versionMajor}.${contentType.versionMinor}`;
const contentTypeStringRegex = /^([^/]+)\/([^:]+):(\d+)\.(\d+)$/;
/**
 * Converts a string to a content type ID
 *
 * @param contentTypeString - String representation of the content type ID
 * @returns Content type ID
 * @throws Error if the string does not match the expected format
 */
const contentTypeFromString = (contentTypeString) => {
    const match = contentTypeString.match(contentTypeStringRegex);
    if (!match) {
        throw new Error(`Invalid content type string: "${contentTypeString}". Expected format: "authorityId/typeId:majorVersion.minorVersion"`);
    }
    const [, authorityId, typeId, major, minor] = match;
    return {
        authorityId,
        typeId,
        versionMajor: Number(major),
        versionMinor: Number(minor),
    };
};

export { contentTypeFromString, contentTypeToString, contentTypesAreEqual };
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