Bugfix. `npm install converse.js` failed

because @converse-headless wasn't available

package-lock.json

@@ -802,9 +802,9 @@
       }
     },
     "@converse/headless": {
-      "version": "4.0.2",
-      "resolved": "https://registry.npmjs.org/@converse/headless/-/headless-4.0.2.tgz",
-      "integrity": "sha512-8q1xkIdOQGA4KBr49e3PTfELAVOm9dxgmoJcVEMizs4a7/ne3lkKH9eE739HEIfBOSQwUlwfKwa09exYZumIZg==",
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/@converse/headless/-/headless-4.2.0.tgz",
+      "integrity": "sha512-M5BPzWHDScvlOGvITbRfUma507q9GmTxBnAOnQiKYb3ctkFxRtRatJOgAyXxpoewMpltENTdj/R169orCDBWFQ==",
       "dev": true
     },
     "@fortawesome/fontawesome-free": {

package.json

@@ -20,7 +20,7 @@
     "converse-headless.min.js": "npm run converse-headless.js && webpack --mode=production --type=headless",
     "clean": "rm -rf node_modules stamp-npm dist *.zip",
     "build": "npm run converse.min.css && npm run converse-headless.min.js && npm run converse.min.js",
-    "prepare": "npm run build"
+    "prepare": "lerna bootstrap --hoist --ignore-scripts && npm run build"
   },
   "repository": {
     "type": "git",

src/headless/package-lock.json

 {
 	"name": "@converse/headless",
-	"version": "4.0.4",
+	"version": "4.2.0",
 	"lockfileVersion": 1,
 	"requires": true,
 	"dependencies": {
+		"backbone": {
+			"version": "1.4.0",
+			"resolved": "https://registry.npmjs.org/backbone/-/backbone-1.4.0.tgz",
+			"integrity": "sha512-RLmDrRXkVdouTg38jcgHhyQ/2zjg7a8E6sz2zxfz21Hh17xDJYUHBZimVIt5fUyS8vbfpeSmTL3gUjTEvUV3qQ==",
+			"dev": true,
+			"requires": {
+				"underscore": ">=1.8.3"
+			}
+		},
 		"backbone.browserStorage": {
-			"version": "0.0.4",
-			"resolved": "https://registry.npmjs.org/backbone.browserStorage/-/backbone.browserStorage-0.0.4.tgz",
-			"integrity": "sha512-4LvDP2IkOu9Nt6kj6ft4moKmqKqm3c0WY3c/aie0Cf374wjFuO7vCh/afcKdu1YSuVsryM8yH90/J7yqWbaPHw==",
+			"version": "0.0.5",
+			"resolved": "https://registry.npmjs.org/backbone.browserStorage/-/backbone.browserStorage-0.0.5.tgz",
+			"integrity": "sha512-Cf8B90EIWyHMm/ReS5yFmFMOXPVNda6QcTFcdyp1RW/1zM3LZF2Nf4U601/seIaEu/X8cRVEKqTINpPKql3sxA==",
+			"dev": true,
 			"requires": {
 				"backbone": "~1.x.x",
 				"underscore": ">=1.4.0"
+			}
+		},
+		"es6-promise": {
+			"version": "4.2.6",
+			"resolved": "https://registry.npmjs.org/es6-promise/-/es6-promise-4.2.6.tgz",
+			"integrity": "sha512-aRVgGdnmW2OiySVPUC9e6m+plolMAJKjZnQlCwNSuK5yQ0JN61DZSO1X1Ufd1foqWRAlig0rhduTCHe7sVtK5Q==",
+			"dev": true
+		},
+		"filesize": {
+			"version": "3.6.1",
+			"resolved": "https://registry.npmjs.org/filesize/-/filesize-3.6.1.tgz",
+			"integrity": "sha512-7KjR1vv6qnicaPMi1iiTcI85CyYwRO/PSFCu6SvqL8jN2Wjt/NIYQTFtFs7fSDCYOstUkEWIQGFUg5YZQfjlcg==",
+			"dev": true
+		},
+		"jed": {
+			"version": "1.1.1",
+			"resolved": "https://registry.npmjs.org/jed/-/jed-1.1.1.tgz",
+			"integrity": "sha1-elSbvZ/+FYWwzQoZHiAwVb7ldLQ=",
+			"dev": true
+		},
+		"lodash": {
+			"version": "4.17.11",
+			"resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.11.tgz",
+			"integrity": "sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==",
+			"dev": true
+		},
+		"pluggable.js": {
+			"version": "2.0.0",
+			"resolved": "https://registry.npmjs.org/pluggable.js/-/pluggable.js-2.0.0.tgz",
+			"integrity": "sha512-FgrSayXWfQQWL+RSDiCAFZbkEsY7hTZCiSuN9Ar/mcHpesxOPfrSzJKp+YbimOt9QFtSd+lR8Uob5tgkdQSOzg==",
+			"dev": true,
+			"requires": {
+				"lodash": "^4.17.4"
+			}
+		},
+		"strophe.js": {
+			"version": "github:strophe/strophejs#f5173c0c606b8bc6204bb00b57b35bbc502d4b31",
+			"from": "github:strophe/strophejs#f5173c0c606b8bc6204bb00b57b35bbc502d4b31",
+			"dev": true
+		},
+		"strophejs-plugin-ping": {
+			"version": "0.0.3",
+			"resolved": "https://registry.npmjs.org/strophejs-plugin-ping/-/strophejs-plugin-ping-0.0.3.tgz",
+			"integrity": "sha512-HS/ArEGKXfu36fihjUSfjqmqOSyppQTJUbrkfEtOBRJmnaP3LsRRe5T2S3dmCdsWHKORaJYc/OHSKfFlxHPdqw==",
+			"dev": true,
+			"requires": {
+				"strophe.js": "^1.2.12"
 			},
 			"dependencies": {
-				"backbone": {
-					"version": "1.3.3",
-					"resolved": "https://registry.npmjs.org/backbone/-/backbone-1.3.3.tgz",
-					"integrity": "sha1-TMgOp8sWMaxHSInOQPL4vGg7KZk=",
-					"requires": {
-						"underscore": ">=1.8.3"
-					}
-				},
-				"underscore": {
-					"version": "1.9.1",
-					"resolved": "https://registry.npmjs.org/underscore/-/underscore-1.9.1.tgz",
-					"integrity": "sha512-5/4etnCkd9c8gwgowi5/om/mYO5ajCaOgdzj/oW+0eQV9WxKBDZw5+ycmKmeaTXjInS/W0BzpGLo2xR2aBwZdg=="
+				"strophe.js": {
+					"version": "1.3.2",
+					"resolved": "https://registry.npmjs.org/strophe.js/-/strophe.js-1.3.2.tgz",
+					"integrity": "sha512-N6n93B0+0/qRazWUtgunJNE3DTfEpz363i17Uvnqh0lvl9iATnMtSoZtKjqN3reKPtjtBpbBRMWAQJRc688QkQ==",
+					"dev": true
 				}
 			}
+		},
+		"strophejs-plugin-rsm": {
+			"version": "0.0.2",
+			"resolved": "https://registry.npmjs.org/strophejs-plugin-rsm/-/strophejs-plugin-rsm-0.0.2.tgz",
+			"integrity": "sha512-Yn/VpxNz3Gkb790rJkwMyjlwHWCjWA9UxIl5kwGnsr7Ofo1MHztgyQ8XwQF1DGFp3Y4oiXbjZ/whG3S/cIgIew==",
+			"dev": true
+		},
+		"twemoji": {
+			"version": "11.3.0",
+			"resolved": "https://registry.npmjs.org/twemoji/-/twemoji-11.3.0.tgz",
+			"integrity": "sha512-xN/vlR6+gDmfjt6LInAqwGAv3Agwrmzx5TD1jEFwKS19IOGDrX0/3OB8GP1wUYPVIdkaer5hw6qd+52jzvz0Lg==",
+			"dev": true
+		},
+		"underscore": {
+			"version": "1.9.1",
+			"resolved": "https://registry.npmjs.org/underscore/-/underscore-1.9.1.tgz",
+			"integrity": "sha512-5/4etnCkd9c8gwgowi5/om/mYO5ajCaOgdzj/oW+0eQV9WxKBDZw5+ycmKmeaTXjInS/W0BzpGLo2xR2aBwZdg==",
+			"dev": true
+		},
+		"urijs": {
+			"version": "1.19.1",
+			"resolved": "https://registry.npmjs.org/urijs/-/urijs-1.19.1.tgz",
+			"integrity": "sha512-xVrGVi94ueCJNrBSTjWqjvtgvl3cyOTThp2zaMaFNGp3F542TR6sM3f2o8RqZl+AwteClSVmoCyt0ka4RjQOQg==",
+			"dev": true
 		}
 	}
 }