62 lines
2.0 KiB
JavaScript
62 lines
2.0 KiB
JavaScript
import { encodeUrl } from '@tinyhttp/encode-url';
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import { getRequestHeader } from '@tinyhttp/req';
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import { vary } from '@tinyhttp/vary';
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import mime from 'mime';
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const charsetRegExp = /;\s*charset\s*=/;
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export const setHeader = (res) => (field, val) => {
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if (typeof field === 'string') {
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let value = Array.isArray(val) ? val.map(String) : String(val);
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// add charset to content-type
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if (field.toLowerCase() === 'content-type') {
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if (Array.isArray(value)) {
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throw new TypeError('Content-Type cannot be set to an Array');
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}
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if (!charsetRegExp.test(value)) {
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const charset = 'UTF-8'; // UTF-8 is the default charset for all types
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if (typeof charset === 'string')
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value += `; charset=${charset.toLowerCase()}`;
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}
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}
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res.setHeader(field, value);
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}
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else {
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for (const key in field) {
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setHeader(res)(key, field[key]);
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}
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}
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return res;
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};
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export const setLocationHeader = (req, res) => (url) => {
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let loc = url;
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// "back" is an alias for the referrer
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if (url === 'back')
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loc = getRequestHeader(req)('Referrer') || '/';
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// set location
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res.setHeader('Location', encodeUrl(loc));
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return res;
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};
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export const getResponseHeader = (res) => {
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return (field) => {
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return res.getHeader(field);
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};
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};
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export const setLinksHeader = (res) => (links) => {
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let link = res.getHeader('Link') || '';
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if (link)
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link += ', ';
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res.setHeader('Link', link +
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Object.keys(links)
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.map((rel) => `<${links[rel]}>; rel="${rel}"`)
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.join(', '));
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return res;
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};
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export const setVaryHeader = (res) => (field) => {
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vary(res, field);
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return res;
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};
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export const setContentType = (res) => (type) => {
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const ct = type.indexOf('/') === -1 ? mime.getType(type) : type;
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setHeader(res)('Content-Type', ct);
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return res;
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};
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//# sourceMappingURL=headers.js.map
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