diff --git a/package-lock.json b/package-lock.json
index b53337e..3656a58 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,11 @@
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+      "resolved": "https://registry.npmjs.org/lerc/-/lerc-3.0.0.tgz",
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+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
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+    "observable-fns": {
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+      "resolved": "https://registry.npmjs.org/observable-fns/-/observable-fns-0.6.1.tgz",
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@@ -1856,6 +1902,11 @@
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+      "resolved": "https://registry.npmjs.org/parse-headers/-/parse-headers-2.0.5.tgz",
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@@ -2479,6 +2530,33 @@
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+      "resolved": "https://registry.npmjs.org/threads/-/threads-1.7.0.tgz",
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+        "callsites": "^3.1.0",
+        "debug": "^4.2.0",
+        "is-observable": "^2.1.0",
+        "observable-fns": "^0.6.1",
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+          "requires": {
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@@ -2493,6 +2571,15 @@
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+      "resolved": "https://registry.npmjs.org/tiny-worker/-/tiny-worker-2.3.0.tgz",
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