feat: ed25519 keys by default (#3693)

Switch from RSA to ed25519 to match what we already do in go-ipfs.

Closes ipfs/js-ipfs#3591

Co-authored-by: achingbrain <[email protected]>

Author: lidel

src/key/export.js

@@ -1,6 +1,7 @@
 'use strict'
 
 const configure = require('../lib/configure')
+const errCode = require('err-code')
 
 /**
  * @typedef {import('../types').HTTPClientExtraOptions} HTTPClientExtraOptions
@@ -12,7 +13,7 @@ module.exports = configure(api => {
    * @type {KeyAPI["export"]}
    */
   const exportKey = async (name, password, options = {}) => {
-    throw new Error('Not implemented')
+    throw errCode(new Error('Not implemented'), 'ERR_NOT_IMPLEMENTED')
   }
 
   return exportKey

src/key/info.js

@@ -1,6 +1,7 @@
 'use strict'
 
 const configure = require('../lib/configure')
+const errCode = require('err-code')
 
 /**
  * @typedef {import('../types').HTTPClientExtraOptions} HTTPClientExtraOptions
@@ -12,7 +13,7 @@ module.exports = configure(api => {
    * @type {KeyAPI["info"]}
    */
   const info = async (name, options = {}) => {
-    throw new Error('Not implemented')
+    throw errCode(new Error('Not implemented'), 'ERR_NOT_IMPLEMENTED')
   }
 
   return info

src/start.js

@@ -1,6 +1,7 @@
 'use strict'
 
 const configure = require('./lib/configure')
+const errCode = require('err-code')
 
 /**
  * @typedef {import('./types').HTTPClientExtraOptions} HTTPClientExtraOptions
@@ -12,7 +13,7 @@ module.exports = configure(api => {
    * @type {RootAPI["start"]}
    */
   const start = async (options = {}) => {
-    throw new Error('Not implemented')
+    throw errCode(new Error('Not implemented'), 'ERR_NOT_IMPLEMENTED')
   }
 
   return start