(headers)
| 17 | * will be ignored if a value has been set for theirlower-cased form |
| 18 | */ |
| 19 | function createHeaders(headers) { |
| 20 | if (typeof headers !== 'object') { |
| 21 | return {}; |
| 22 | } |
| 23 | const out = {}; |
| 24 | Object.entries(headers).forEach(([key, value]) => { |
| 25 | const lowKey = key.toLowerCase(); |
| 26 | if (out[lowKey] === undefined) { |
| 27 | out[lowKey] = value; |
| 28 | } |
| 29 | }); |
| 30 | return out; |
| 31 | } |
| 32 | |
| 33 | /** |
| 34 | * @param {url.URL | string} endpoint - |