diff --git a/package.json b/package.json
index 926d56f34..94fa72e01 100644
--- a/package.json
+++ b/package.json
@@ -76,6 +76,7 @@
     "@babel/register": "^7.14.5",
     "@commitlint/cli": "^17.0.0",
     "@commitlint/config-conventional": "^17.0.0",
+    "@types/d3": "^7.4.0",
     "@types/jest": "^28.1.7",
     "babel-jest": "^28.0.3",
     "babel-loader": "^8.2.2",
diff --git a/src/errorRenderer.js b/src/errorRenderer.ts
similarity index 92%
rename from src/errorRenderer.js
rename to src/errorRenderer.ts
index 28a9579ad..1f2b61e2e 100644
--- a/src/errorRenderer.js
+++ b/src/errorRenderer.ts
@@ -2,28 +2,24 @@
 import { select } from 'd3';
 import { log } from './logger';
 
-const conf = {};
+let conf = {};
 
 /**
  * Merges the value of `conf` with the passed `cnf`
  *
  * @param {object} cnf Config to merge
  */
-export const setConf = function (cnf) {
-  const keys = Object.keys(cnf);
-
-  keys.forEach(function (key) {
-    conf[key] = cnf[key];
-  });
+export const setConf = function (cnf: any) {
+  conf = { ...conf, ...cnf };
 };
 
 /**
  * Draws a an info picture in the tag with id: id based on the graph definition in text.
  *
  * @param {string} id The text for the error
- * @param {string} ver The version
+ * @param {string} mermaidVersion The version
  */
-export const draw = (id, ver) => {
+export const draw = (id: string, mermaidVersion: string) => {
   try {
     log.debug('Renering svg for syntax error\n');
 
@@ -86,13 +82,14 @@ export const draw = (id, ver) => {
       .attr('y', 400)
       .attr('font-size', '100px')
       .style('text-anchor', 'middle')
-      .text('mermaid version ' + ver);
+      .text('mermaid version ' + mermaidVersion);
 
     svg.attr('height', 100);
     svg.attr('width', 400);
     svg.attr('viewBox', '768 0 512 512');
   } catch (e) {
     log.error('Error while rendering info diagram');
+    // @ts-ignore
     log.error(e.message);
   }
 };
diff --git a/yarn.lock b/yarn.lock
index ac77dcf9d..9848cc6bb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2220,6 +2220,216 @@
   dependencies:
     "@types/node" "*"
 
+"@types/d3-array@*":
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/@types/d3-array/-/d3-array-3.0.3.tgz#87d990bf504d14ad6b16766979d04e943c046dac"
+  integrity sha512-Reoy+pKnvsksN0lQUlcH6dOGjRZ/3WRwXR//m+/8lt1BXeI4xyaUZoqULNjyXXRuh0Mj4LNpkCvhUpQlY3X5xQ==
+
+"@types/d3-axis@*":
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/@types/d3-axis/-/d3-axis-3.0.1.tgz#6afc20744fa5cc0cbc3e2bd367b140a79ed3e7a8"
+  integrity sha512-zji/iIbdd49g9WN0aIsGcwcTBUkgLsCSwB+uH+LPVDAiKWENMtI3cJEWt+7/YYwelMoZmbBfzA3qCdrZ2XFNnw==
+  dependencies:
+    "@types/d3-selection" "*"
+
+"@types/d3-brush@*":
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/@types/d3-brush/-/d3-brush-3.0.1.tgz#ae5f17ce391935ca88b29000e60ee20452c6357c"
+  integrity sha512-B532DozsiTuQMHu2YChdZU0qsFJSio3Q6jmBYGYNp3gMDzBmuFFgPt9qKA4VYuLZMp4qc6eX7IUFUEsvHiXZAw==
+  dependencies:
+    "@types/d3-selection" "*"
+
+"@types/d3-chord@*":
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/@types/d3-chord/-/d3-chord-3.0.1.tgz#54c8856c19c8e4ab36a53f73ba737de4768ad248"
+  integrity sha512-eQfcxIHrg7V++W8Qxn6QkqBNBokyhdWSAS73AbkbMzvLQmVVBviknoz2SRS/ZJdIOmhcmmdCRE/NFOm28Z1AMw==
+
+"@types/d3-color@*":
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/@types/d3-color/-/d3-color-3.1.0.tgz#6594da178ded6c7c3842f3cc0ac84b156f12f2d4"
+  integrity sha512-HKuicPHJuvPgCD+np6Se9MQvS6OCbJmOjGvylzMJRlDwUXjKTTXs6Pwgk79O09Vj/ho3u1ofXnhFOaEWWPrlwA==
+
+"@types/d3-contour@*":
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/@types/d3-contour/-/d3-contour-3.0.1.tgz#9ff4e2fd2a3910de9c5097270a7da8a6ef240017"
+  integrity sha512-C3zfBrhHZvrpAAK3YXqLWVAGo87A4SvJ83Q/zVJ8rFWJdKejUnDYaWZPkA8K84kb2vDA/g90LTQAz7etXcgoQQ==
+  dependencies:
+    "@types/d3-array" "*"
+    "@types/geojson" "*"
+
+"@types/d3-delaunay@*":
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/@types/d3-delaunay/-/d3-delaunay-6.0.1.tgz#006b7bd838baec1511270cb900bf4fc377bbbf41"
+  integrity sha512-tLxQ2sfT0p6sxdG75c6f/ekqxjyYR0+LwPrsO1mbC9YDBzPJhs2HbJJRrn8Ez1DBoHRo2yx7YEATI+8V1nGMnQ==
+
+"@types/d3-dispatch@*":
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/@types/d3-dispatch/-/d3-dispatch-3.0.1.tgz#a1b18ae5fa055a6734cb3bd3cbc6260ef19676e3"
+  integrity sha512-NhxMn3bAkqhjoxabVJWKryhnZXXYYVQxaBnbANu0O94+O/nX9qSjrA1P1jbAQJxJf+VC72TxDX/YJcKue5bRqw==
+
+"@types/d3-drag@*":
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/@types/d3-drag/-/d3-drag-3.0.1.tgz#fb1e3d5cceeee4d913caa59dedf55c94cb66e80f"
+  integrity sha512-o1Va7bLwwk6h03+nSM8dpaGEYnoIG19P0lKqlic8Un36ymh9NSkNFX1yiXMKNMx8rJ0Kfnn2eovuFaL6Jvj0zA==
+  dependencies:
+    "@types/d3-selection" "*"
+
+"@types/d3-dsv@*":
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/@types/d3-dsv/-/d3-dsv-3.0.0.tgz#f3c61fb117bd493ec0e814856feb804a14cfc311"
+  integrity sha512-o0/7RlMl9p5n6FQDptuJVMxDf/7EDEv2SYEO/CwdG2tr1hTfUVi0Iavkk2ax+VpaQ/1jVhpnj5rq1nj8vwhn2A==
+
+"@types/d3-ease@*":
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/@types/d3-ease/-/d3-ease-3.0.0.tgz#c29926f8b596f9dadaeca062a32a45365681eae0"
+  integrity sha512-aMo4eaAOijJjA6uU+GIeW018dvy9+oH5Y2VPPzjjfxevvGQ/oRDs+tfYC9b50Q4BygRR8yE2QCLsrT0WtAVseA==
+
+"@types/d3-fetch@*":
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/@types/d3-fetch/-/d3-fetch-3.0.1.tgz#f9fa88b81aa2eea5814f11aec82ecfddbd0b8fe0"
+  integrity sha512-toZJNOwrOIqz7Oh6Q7l2zkaNfXkfR7mFSJvGvlD/Ciq/+SQ39d5gynHJZ/0fjt83ec3WL7+u3ssqIijQtBISsw==
+  dependencies:
+    "@types/d3-dsv" "*"
+
+"@types/d3-force@*":
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/@types/d3-force/-/d3-force-3.0.3.tgz#76cb20d04ae798afede1ea6e41750763ff5a9c82"
+  integrity sha512-z8GteGVfkWJMKsx6hwC3SiTSLspL98VNpmvLpEFJQpZPq6xpA1I8HNBDNSpukfK0Vb0l64zGFhzunLgEAcBWSA==
+
+"@types/d3-format@*":
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/@types/d3-format/-/d3-format-3.0.1.tgz#194f1317a499edd7e58766f96735bdc0216bb89d"
+  integrity sha512-5KY70ifCCzorkLuIkDe0Z9YTf9RR2CjBX1iaJG+rgM/cPP+sO+q9YdQ9WdhQcgPj1EQiJ2/0+yUkkziTG6Lubg==
+
+"@types/d3-geo@*":
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/@types/d3-geo/-/d3-geo-3.0.2.tgz#e7ec5f484c159b2c404c42d260e6d99d99f45d9a"
+  integrity sha512-DbqK7MLYA8LpyHQfv6Klz0426bQEf7bRTvhMy44sNGVyZoWn//B0c+Qbeg8Osi2Obdc9BLLXYAKpyWege2/7LQ==
+  dependencies:
+    "@types/geojson" "*"
+
+"@types/d3-hierarchy@*":
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/@types/d3-hierarchy/-/d3-hierarchy-3.1.0.tgz#4561bb7ace038f247e108295ef77b6a82193ac25"
+  integrity sha512-g+sey7qrCa3UbsQlMZZBOHROkFqx7KZKvUpRzI/tAp/8erZWpYq7FgNKvYwebi2LaEiVs1klhUfd3WCThxmmWQ==
+
+"@types/d3-interpolate@*":
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/@types/d3-interpolate/-/d3-interpolate-3.0.1.tgz#e7d17fa4a5830ad56fe22ce3b4fac8541a9572dc"
+  integrity sha512-jx5leotSeac3jr0RePOH1KdR9rISG91QIE4Q2PYTu4OymLTZfA3SrnURSLzKH48HmXVUru50b8nje4E79oQSQw==
+  dependencies:
+    "@types/d3-color" "*"
+
+"@types/d3-path@*":
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/@types/d3-path/-/d3-path-3.0.0.tgz#939e3a784ae4f80b1fde8098b91af1776ff1312b"
+  integrity sha512-0g/A+mZXgFkQxN3HniRDbXMN79K3CdTpLsevj+PXiTcb2hVyvkZUBg37StmgCQkaD84cUJ4uaDAWq7UJOQy2Tg==
+
+"@types/d3-polygon@*":
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/@types/d3-polygon/-/d3-polygon-3.0.0.tgz#5200a3fa793d7736fa104285fa19b0dbc2424b93"
+  integrity sha512-D49z4DyzTKXM0sGKVqiTDTYr+DHg/uxsiWDAkNrwXYuiZVd9o9wXZIo+YsHkifOiyBkmSWlEngHCQme54/hnHw==
+
+"@types/d3-quadtree@*":
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/@types/d3-quadtree/-/d3-quadtree-3.0.2.tgz#433112a178eb7df123aab2ce11c67f51cafe8ff5"
+  integrity sha512-QNcK8Jguvc8lU+4OfeNx+qnVy7c0VrDJ+CCVFS9srBo2GL9Y18CnIxBdTF3v38flrGy5s1YggcoAiu6s4fLQIw==
+
+"@types/d3-random@*":
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/@types/d3-random/-/d3-random-3.0.1.tgz#5c8d42b36cd4c80b92e5626a252f994ca6bfc953"
+  integrity sha512-IIE6YTekGczpLYo/HehAy3JGF1ty7+usI97LqraNa8IiDur+L44d0VOjAvFQWJVdZOJHukUJw+ZdZBlgeUsHOQ==
+
+"@types/d3-scale-chromatic@*":
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/@types/d3-scale-chromatic/-/d3-scale-chromatic-3.0.0.tgz#103124777e8cdec85b20b51fd3397c682ee1e954"
+  integrity sha512-dsoJGEIShosKVRBZB0Vo3C8nqSDqVGujJU6tPznsBJxNJNwMF8utmS83nvCBKQYPpjCzaaHcrf66iTRpZosLPw==
+
+"@types/d3-scale@*":
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/@types/d3-scale/-/d3-scale-4.0.2.tgz#41be241126af4630524ead9cb1008ab2f0f26e69"
+  integrity sha512-Yk4htunhPAwN0XGlIwArRomOjdoBFXC3+kCxK2Ubg7I9shQlVSJy/pG/Ht5ASN+gdMIalpk8TJ5xV74jFsetLA==
+  dependencies:
+    "@types/d3-time" "*"
+
+"@types/d3-selection@*":
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/@types/d3-selection/-/d3-selection-3.0.3.tgz#57be7da68e7d9c9b29efefd8ea5a9ef1171e42ba"
+  integrity sha512-Mw5cf6nlW1MlefpD9zrshZ+DAWL4IQ5LnWfRheW6xwsdaWOb6IRRu2H7XPAQcyXEx1D7XQWgdoKR83ui1/HlEA==
+
+"@types/d3-shape@*":
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/@types/d3-shape/-/d3-shape-3.1.0.tgz#1d87a6ddcf28285ef1e5c278ca4bdbc0658f3505"
+  integrity sha512-jYIYxFFA9vrJ8Hd4Se83YI6XF+gzDL1aC5DCsldai4XYYiVNdhtpGbA/GM6iyQ8ayhSp3a148LY34hy7A4TxZA==
+  dependencies:
+    "@types/d3-path" "*"
+
+"@types/d3-time-format@*":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/@types/d3-time-format/-/d3-time-format-4.0.0.tgz#ee7b6e798f8deb2d9640675f8811d0253aaa1946"
+  integrity sha512-yjfBUe6DJBsDin2BMIulhSHmr5qNR5Pxs17+oW4DoVPyVIXZ+m6bs7j1UVKP08Emv6jRmYrYqxYzO63mQxy1rw==
+
+"@types/d3-time@*":
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/@types/d3-time/-/d3-time-3.0.0.tgz#e1ac0f3e9e195135361fa1a1d62f795d87e6e819"
+  integrity sha512-sZLCdHvBUcNby1cB6Fd3ZBrABbjz3v1Vm90nysCQ6Vt7vd6e/h9Lt7SiJUoEX0l4Dzc7P5llKyhqSi1ycSf1Hg==
+
+"@types/d3-timer@*":
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/@types/d3-timer/-/d3-timer-3.0.0.tgz#e2505f1c21ec08bda8915238e397fb71d2fc54ce"
+  integrity sha512-HNB/9GHqu7Fo8AQiugyJbv6ZxYz58wef0esl4Mv828w1ZKpAshw/uFWVDUcIB9KKFeFKoxS3cHY07FFgtTRZ1g==
+
+"@types/d3-transition@*":
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/@types/d3-transition/-/d3-transition-3.0.2.tgz#393dc3e3d55009a43cc6f252e73fccab6d78a8a4"
+  integrity sha512-jo5o/Rf+/u6uerJ/963Dc39NI16FQzqwOc54bwvksGAdVfvDrqDpVeq95bEvPtBwLCVZutAEyAtmSyEMxN7vxQ==
+  dependencies:
+    "@types/d3-selection" "*"
+
+"@types/d3-zoom@*":
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/@types/d3-zoom/-/d3-zoom-3.0.1.tgz#4bfc7e29625c4f79df38e2c36de52ec3e9faf826"
+  integrity sha512-7s5L9TjfqIYQmQQEUcpMAcBOahem7TRoSO/+Gkz02GbMVuULiZzjF2BOdw291dbO2aNon4m2OdFsRGaCq2caLQ==
+  dependencies:
+    "@types/d3-interpolate" "*"
+    "@types/d3-selection" "*"
+
+"@types/d3@^7.4.0":
+  version "7.4.0"
+  resolved "https://registry.yarnpkg.com/@types/d3/-/d3-7.4.0.tgz#fc5cac5b1756fc592a3cf1f3dc881bf08225f515"
+  integrity sha512-jIfNVK0ZlxcuRDKtRS/SypEyOQ6UHaFQBKv032X45VvxSJ6Yi5G9behy9h6tNTHTDGh5Vq+KbmBjUWLgY4meCA==
+  dependencies:
+    "@types/d3-array" "*"
+    "@types/d3-axis" "*"
+    "@types/d3-brush" "*"
+    "@types/d3-chord" "*"
+    "@types/d3-color" "*"
+    "@types/d3-contour" "*"
+    "@types/d3-delaunay" "*"
+    "@types/d3-dispatch" "*"
+    "@types/d3-drag" "*"
+    "@types/d3-dsv" "*"
+    "@types/d3-ease" "*"
+    "@types/d3-fetch" "*"
+    "@types/d3-force" "*"
+    "@types/d3-format" "*"
+    "@types/d3-geo" "*"
+    "@types/d3-hierarchy" "*"
+    "@types/d3-interpolate" "*"
+    "@types/d3-path" "*"
+    "@types/d3-polygon" "*"
+    "@types/d3-quadtree" "*"
+    "@types/d3-random" "*"
+    "@types/d3-scale" "*"
+    "@types/d3-scale-chromatic" "*"
+    "@types/d3-selection" "*"
+    "@types/d3-shape" "*"
+    "@types/d3-time" "*"
+    "@types/d3-time-format" "*"
+    "@types/d3-timer" "*"
+    "@types/d3-transition" "*"
+    "@types/d3-zoom" "*"
+
 "@types/debug@^4.0.0":
   version "4.1.7"
   resolved "https://registry.yarnpkg.com/@types/debug/-/debug-4.1.7.tgz#7cc0ea761509124709b8b2d1090d8f6c17aadb82"
@@ -2267,6 +2477,11 @@
     "@types/qs" "*"
     "@types/serve-static" "*"
 
+"@types/geojson@*":
+  version "7946.0.10"
+  resolved "https://registry.yarnpkg.com/@types/geojson/-/geojson-7946.0.10.tgz#6dfbf5ea17142f7f9a043809f1cd4c448cb68249"
+  integrity sha512-Nmh0K3iWQJzniTuPRcJn5hxXkfB1T1pgB89SBig5PlJQU5yocazeu4jATJlaA0GYFKWMqDdvYemoSnF2pXgLVA==
+
 "@types/graceful-fs@^4.1.3":
   version "4.1.5"
   resolved "https://registry.yarnpkg.com/@types/graceful-fs/-/graceful-fs-4.1.5.tgz#21ffba0d98da4350db64891f92a9e5db3cdb4e15"