diff --git a/package-lock.json b/package-lock.json
index 9af7f71cc6f9..e95380d9b44a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -179,9 +179,9 @@
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     },
     "@rollup/plugin-sucrase": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/@rollup/plugin-sucrase/-/plugin-sucrase-3.0.0.tgz",
-      "integrity": "sha512-sUQkoAXdw+bnd/cNZHGy5yQKW6OYYU7QlYBGhReI95uZljxO8t1LlbqCO2viIMV/u9pcCjgi8N9PcApcrJCA8Q==",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@rollup/plugin-sucrase/-/plugin-sucrase-3.1.0.tgz",
+      "integrity": "sha512-PZ70LDNgIj8rL+3pKwKwTBOQ2c9JofXeLbWz+2V4/nCt4LqwYTNqxJJf1riTJsVARVzJdA0woIzUzjKZvL8TfA==",
       "dev": true,
       "requires": {
         "@rollup/pluginutils": "^3.0.1",
@@ -996,9 +996,9 @@
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     "commander": {
-      "version": "2.20.0",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.0.tgz",
-      "integrity": "sha512-7j2y+40w61zy6YC2iRNpUe/NwhNyoXrYpHMrSunaMG64nRnaf96zO/KMQR4OyN/UnE5KLyEBnKHd4aG3rskjpQ==",
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-4.1.1.tgz",
+      "integrity": "sha512-NOKm8xhkzAjzFx8B2v5OAHT+u5pRQc2UCa2Vq9jYL/31o2wi9mxBA7LIFs3sV5VSC49z6pEhfbMULvShKj26WA==",
       "dev": true
     },
     "concat-map": {
@@ -4330,15 +4330,33 @@
       "dev": true
     },
     "sucrase": {
-      "version": "3.10.1",
-      "resolved": "https://registry.npmjs.org/sucrase/-/sucrase-3.10.1.tgz",
-      "integrity": "sha512-nMOs6rFWwkYRxcKHHDjyQmC5CmLbHN2LwRyWF1n2i0kb/pq0xcB9M19TdY5Ivfcj1BsWfs+az9Ga5B0tFdE5ww==",
+      "version": "3.16.0",
+      "resolved": "https://registry.npmjs.org/sucrase/-/sucrase-3.16.0.tgz",
+      "integrity": "sha512-ovVuswxV5TayCPXfTk8bgBgk6uNRvsinIkEpq0J6zS1xXCx5N/LLGcbsKdRhqn/ToZylMX6+yXaR1LSn1I42Pg==",
       "dev": true,
       "requires": {
-        "commander": "^2.19.0",
+        "commander": "^4.0.0",
+        "glob": "7.1.6",
         "lines-and-columns": "^1.1.6",
         "mz": "^2.7.0",
-        "pirates": "^4.0.0"
+        "pirates": "^4.0.1",
+        "ts-interface-checker": "^0.1.9"
+      },
+      "dependencies": {
+        "glob": {
+          "version": "7.1.6",
+          "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.6.tgz",
+          "integrity": "sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==",
+          "dev": true,
+          "requires": {
+            "fs.realpath": "^1.0.0",
+            "inflight": "^1.0.4",
+            "inherits": "2",
+            "minimatch": "^3.0.4",
+            "once": "^1.3.0",
+            "path-is-absolute": "^1.0.0"
+          }
+        }
       }
     },
     "supports-color": {
@@ -4427,9 +4445,9 @@
       "dev": true
     },
     "thenify": {
-      "version": "3.3.0",
-      "resolved": "https://registry.npmjs.org/thenify/-/thenify-3.3.0.tgz",
-      "integrity": "sha1-5p44obq+lpsBCCB5eLn2K4hgSDk=",
+      "version": "3.3.1",
+      "resolved": "https://registry.npmjs.org/thenify/-/thenify-3.3.1.tgz",
+      "integrity": "sha512-RVZSIV5IG10Hk3enotrhvz0T9em6cyHBLkH/YAZuKqd8hRkKhSfCGIcP2KUY0EPxndzANBmNllzWPwak+bheSw==",
       "dev": true,
       "requires": {
         "any-promise": "^1.0.0"
@@ -4483,6 +4501,12 @@
         "punycode": "^2.1.0"
       }
     },
+    "ts-interface-checker": {
+      "version": "0.1.13",
+      "resolved": "https://registry.npmjs.org/ts-interface-checker/-/ts-interface-checker-0.1.13.tgz",
+      "integrity": "sha512-Y/arvbn+rrz3JCKl9C4kVNfTfSm2/mEp5FSz5EsZSANGPSlQrpRI5M4PKF+mJnE52jOO90PnPSc3Ur3bTQw0gA==",
+      "dev": true
+    },
     "tsconfig-paths": {
       "version": "3.9.0",
       "resolved": "https://registry.npmjs.org/tsconfig-paths/-/tsconfig-paths-3.9.0.tgz",
@@ -4496,9 +4520,9 @@
       }
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     "tslib": {
-      "version": "1.10.0",
-      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.10.0.tgz",
-      "integrity": "sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ==",
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.0.3.tgz",
+      "integrity": "sha512-uZtkfKblCEQtZKBF6EBXVZeQNl82yqtDQdv+eck8u7tdPxjLu2/lp5/uPW+um2tpuxINHWy3GhiccY7QgEaVHQ==",
       "dev": true
     },
     "tsutils": {
@@ -4508,6 +4532,14 @@
       "dev": true,
       "requires": {
         "tslib": "^1.8.1"
+      },
+      "dependencies": {
+        "tslib": {
+          "version": "1.14.1",
+          "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.14.1.tgz",
+          "integrity": "sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==",
+          "dev": true
+        }
       }
     },
     "tunnel-agent": {
@@ -4547,9 +4579,9 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.5.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
-      "integrity": "sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==",
+      "version": "3.7.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.5.tgz",
+      "integrity": "sha512-/P5lkRXkWHNAbcJIiHPfRoKqyd7bsyCma1hZNUGfn20qm64T6ZBlrzprymeu918H+mB/0rIg2gGK/BXkhhYgBw==",
       "dev": true
     },
     "uri-js": {
diff --git a/package.json b/package.json
index d31f368e5261..7c123d812b82 100644
--- a/package.json
+++ b/package.json
@@ -99,7 +99,7 @@
     "@rollup/plugin-json": "^4.0.1",
     "@rollup/plugin-node-resolve": "^6.0.0",
     "@rollup/plugin-replace": "^2.3.0",
-    "@rollup/plugin-sucrase": "^3.0.0",
+    "@rollup/plugin-sucrase": "^3.1.0",
     "@rollup/plugin-typescript": "^2.0.1",
     "@rollup/plugin-virtual": "^2.0.0",
     "@sveltejs/eslint-config": "github:sveltejs/eslint-config#v5.6.0",
@@ -130,8 +130,8 @@
     "source-map-support": "^0.5.13",
     "sourcemap-codec": "^1.4.8",
     "tiny-glob": "^0.2.6",
-    "tslib": "^1.10.0",
-    "typescript": "^3.5.3"
+    "tslib": "^2.0.3",
+    "typescript": "^3.7.5"
   },
   "nyc": {
     "include": [