re-add slow lz4js library to conduct performance comparison on dev in…

…stance

.circleci/not-on-master.sh

@@ -1,8 +1,8 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [ "${CIRCLE_BRANCH}" == "master" ]; then
+# if [ "${CIRCLE_BRANCH}" == "master" ]; then
   echo "Skipping this step on master..."
-else
-  exec "$@"
-fi
+# else
+#   exec "$@"
+# fi

frontend/javascripts/oxalis/workers/byte_array_lz4_compression.worker.ts

@@ -1,12 +1,23 @@
 import { expose } from "./comlink_wrapper";
+// @ts-expect-error ts-migrate(7016) FIXME: Could not find a declaration file for module 'lz4j... Remove this comment to see the full error message
+import lz4Slow from "lz4js";
 import * as lz4 from "lz4-wasm";
 
+const useSlowCompressor = Math.random() > 0.5;
+console.log("useSlowCompressor", useSlowCompressor);
 function compressLz4Block(data: Uint8Array, compress: boolean): Uint8Array {
+  const compressor = useSlowCompressor ? lz4Slow : lz4;
+
+  const then = performance.now();
   if (compress) {
-    return lz4.compress(data);
+    const retval = compressor.compress(data);
+    console.log(`${useSlowCompressor ? "slow" : "fast"} compress: ${performance.now() - then}`);
+    return retval;
   }
 
-  return lz4.decompress(data);
+  const retval = compressor.decompress(data);
+  console.log(`${useSlowCompressor ? "slow" : "fast"} decompress: ${performance.now() - then}`);
+  return retval;
 }
 
 // This function is only exposed for slow_byte_array_lz4_compression.worker.js

package.json

@@ -185,6 +185,7 @@
     "jszip": "^3.7.0",
     "lodash": "^4.17.21",
     "lz4-wasm": "^0.9.2",
+    "lz4js": "^0.2.0",
     "memoize-one": "^6.0.0",
     "mini-css-extract-plugin": "^2.5.2",
     "minisearch": "^5.0.0",

yarn.lock

@@ -8732,6 +8732,11 @@ lz4-wasm@^0.9.2:
   resolved "https://registry.yarnpkg.com/lz4-wasm/-/lz4-wasm-0.9.2.tgz#2047b8a9771ad33b1699c350cda3e86249fbbb46"
   integrity sha512-8Y/OvG/nTQNWR242NhLmjI7VzLMRKFaxg/+Pxi/vkczgFdrS4qiJ8l6n30XyNJyc0TB5C66Ncdjq345Kx5XsvQ==
 
+lz4js@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/lz4js/-/lz4js-0.2.0.tgz#09f1a397cb2158f675146c3351dde85058cb322f"
+  integrity sha512-gY2Ia9Lm7Ep8qMiuGRhvUq0Q7qUereeldZPP1PMEJxPtEWHJLqw9pgX68oHajBH0nzJK4MaZEA/YNV3jT8u8Bg==
+
 magic-string@^0.25.7:
   version "0.25.7"
   resolved "https://registry.yarnpkg.com/magic-string/-/magic-string-0.25.7.tgz#3f497d6fd34c669c6798dcb821f2ef31f5445051"