@kontent-ai/core-sdk/lib/utils/header.utils.ts

Core package with shared / common functionality for Kontent.ai SDKs

import type { CommonHeaderNames, Header, SDKInfo } from "../models/core.models.js";

export function getSdkIdHeader(info: SDKInfo): Header {
	return {
		name: "X-KC-SDKID" satisfies CommonHeaderNames,
		value: `${info.host};${info.name};${info.version}`,
	};
}

export function getRetryAfterHeaderValue(headers: readonly Header[]): number | undefined {
	const retryAfterHeader = headers.find((header) => header.name.toLowerCase() === ("Retry-After" satisfies CommonHeaderNames).toLowerCase());

	if (!retryAfterHeader) {
		return undefined;
	}

	const numberValue = +retryAfterHeader.value;

	if (!Number.isSafeInteger(numberValue)) {
		return undefined;
	}

	return numberValue;
}

export function toSdkHeaders(headers: Headers): readonly Header[] {
	return Array.from(headers.entries()).map(([key, value]) => ({
		name: key,
		value: value,
	}));
}

export function toFetchHeaders(headers: readonly Header[]): Headers {
	return headers.reduce<Headers>((headers, header) => {
		headers.append(header.name, header.value);
		return headers;
	}, new Headers());
}