perf(postcss): less allocations

src/loaders/postcss/import-export.ts

@@ -92,10 +92,10 @@ const plugin: postcss.Plugin<ImportExportOptions> = postcss.plugin(
 
     replaceSymbols(css, importedValues);
 
-    const json: Json = {};
-    Object.entries(icssExports).forEach(([k, v]) => {
-      json[k] = replaceValueSymbols(v, importedValues);
-    });
+    const json = Object.entries(icssExports).reduce((acc, [k, v]) => {
+      acc[k] = replaceValueSymbols(v, importedValues);
+      return acc;
+    }, {} as Json);
 
     // Needed mainly for the plugin itself, for recursion
     res.messages.push({ plugin: name, type: "export", json });

yarn.lock

@@ -232,9 +232,9 @@
     "@babel/types" "^7.8.3"
 
 "@babel/helpers@^7.9.0":
-  version "7.9.0"
-  resolved "https://registry.yarnpkg.com/@babel/helpers/-/helpers-7.9.0.tgz#ab2c1bc4821af766cab51d4868a5038874ea5a12"
-  integrity sha512-/9GvfYTCG1NWCNwDj9e+XlnSCmWW/r9T794Xi58vPF9WCcnZCAZ0kWLSn54oqP40SUvh1T2G6VwKmFO5AOlW3A==
+  version "7.9.2"
+  resolved "https://registry.yarnpkg.com/@babel/helpers/-/helpers-7.9.2.tgz#b42a81a811f1e7313b88cba8adc66b3d9ae6c09f"
+  integrity sha512-JwLvzlXVPjO8eU9c/wF9/zOIN7X6h8DYf7mG4CiFRZRvZNKEF5dQ3H3V+ASkHoIB3mWhatgl5ONhyqHRI6MppA==
   dependencies:
     "@babel/template" "^7.8.3"
     "@babel/traverse" "^7.9.0"
@@ -250,9 +250,9 @@
     js-tokens "^4.0.0"
 
 "@babel/parser@^7.1.0", "@babel/parser@^7.7.5", "@babel/parser@^7.8.6", "@babel/parser@^7.9.0":
-  version "7.9.0"
-  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.9.0.tgz#f821b32313f07ee570976d3f6238e8d2d66e0a8e"
-  integrity sha512-Iwyp00CZsypoNJcpXCbq3G4tcDgphtlMwMVrMhhZ//XBkqjXF7LW6V511yk0+pBX3ZwwGnPea+pTKNJiqA7pUg==
+  version "7.9.2"
+  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.9.2.tgz#4e767f424b479c514077544484d1f9bdba7f1158"
+  integrity sha512-2jyvKdoOS1aWAFL2rjJZmamyDDkPCx/AAz4/Wh1Dfxvw8qqnOvek/ZlHQ2noO/o8JpnXa/WiUUFOv48meBKkpA==
 
 "@babel/plugin-proposal-async-generator-functions@^7.8.3":
   version "7.8.3"
@@ -429,9 +429,9 @@
     lodash "^4.17.13"
 
 "@babel/plugin-transform-classes@^7.9.0":
-  version "7.9.0"
-  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-classes/-/plugin-transform-classes-7.9.0.tgz#ab89c175ecf5b4c8911194aa8657966615324ce9"
-  integrity sha512-xt/0CuBRBsBkqfk95ILxf0ge3gnXjEhOHrNxIiS8fdzSWgecuf9Vq2ogLUfaozJgt3LDO49ThMVWiyezGkei7A==
+  version "7.9.2"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-classes/-/plugin-transform-classes-7.9.2.tgz#8603fc3cc449e31fdbdbc257f67717536a11af8d"
+  integrity sha512-TC2p3bPzsfvSsqBZo0kJnuelnoK9O3welkUpqSqBQuBF6R5MN2rysopri8kNvtlGIb2jmUO7i15IooAZJjZuMQ==
   dependencies:
     "@babel/helper-annotate-as-pure" "^7.8.3"
     "@babel/helper-define-map" "^7.8.3"
@@ -730,9 +730,9 @@
     esutils "^2.0.2"
 
 "@babel/runtime@^7.8.4", "@babel/runtime@^7.8.7":
-  version "7.9.0"
-  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.9.0.tgz#337eda67401f5b066a6f205a3113d4ac18ba495b"
-  integrity sha512-cTIudHnzuWLS56ik4DnRnqqNf8MkdUzV4iFFI1h7Jo9xvrpQROYaAnaSd2mHLQAzzZAPfATynX5ord6YlNYNMA==
+  version "7.9.2"
+  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.9.2.tgz#d90df0583a3a252f09aaa619665367bae518db06"
+  integrity sha512-NE2DtOdufG7R5vnfQUTehdTfNycfUANEtCa9PssN9O/xmTzP4E08UI797ixaei6hBEVL9BI/PsdJS5x7mWoB9Q==
   dependencies:
     regenerator-runtime "^0.13.4"
 
@@ -2781,9 +2781,9 @@ ecc-jsbn@~0.1.1:
     safer-buffer "^2.1.0"
 
 electron-to-chromium@^1.3.363, electron-to-chromium@^1.3.378:
-  version "1.3.379"
-  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.379.tgz#81dc5e82a3e72bbb830d93e15bc35eda2bbc910e"
-  integrity sha512-NK9DBBYEBb5f9D7zXI0hiE941gq3wkBeQmXs1ingigA/jnTg5mhwY2Z5egwA+ZI8OLGKCx0h1Cl8/xeuIBuLlg==
+  version "1.3.380"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.380.tgz#1e1f07091b42b54bccd0ad6d3a14f2b73b60dc9d"
+  integrity sha512-2jhQxJKcjcSpVOQm0NAfuLq8o+130blrcawoumdXT6411xG/xIAOyZodO/y7WTaYlz/NHe3sCCAe/cJLnDsqTw==
 
 elegant-spinner@^1.0.1:
   version "1.0.1"
@@ -3715,9 +3715,9 @@ html-encoding-sniffer@^1.0.2:
     whatwg-encoding "^1.0.1"
 
 html-escaper@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/html-escaper/-/html-escaper-2.0.0.tgz#71e87f931de3fe09e56661ab9a29aadec707b491"
-  integrity sha512-a4u9BeERWGu/S8JiWEAQcdrg9v4QArtP9keViQjGMdff20fBdd8waotXaNmODqBe6uZ3Nafi7K/ho4gCQHV3Ig==
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/html-escaper/-/html-escaper-2.0.1.tgz#beed86b5d2b921e92533aa11bce6d8e3b583dee7"
+  integrity sha512-hNX23TjWwD3q56HpWjUHOKj1+4KKlnjv9PcmBUYKVpga+2cnb9nDx/B1o0yO4n+RZXZdiNxzx6B24C9aNMTkkQ==
 
 http-signature@~1.2.0:
   version "1.2.0"
@@ -5865,9 +5865,9 @@ performance-now@^2.1.0:
   integrity sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns=
 
 picomatch@^2.0.4, picomatch@^2.0.5, picomatch@^2.0.7:
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/picomatch/-/picomatch-2.2.1.tgz#21bac888b6ed8601f831ce7816e335bc779f0a4a"
-  integrity sha512-ISBaA8xQNmwELC7eOjqFKMESB2VIqt4PPDD0nsS95b/9dZXvVKOlz9keMSnoGGKcOHXfTvDD6WMaRoSc9UuhRA==
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/picomatch/-/picomatch-2.2.2.tgz#21f333e9b6b8eaff02468f5146ea406d345f4dad"
+  integrity sha512-q0M/9eZHzmr0AulXyPwNfZjtwZ/RBZlbN3K3CErVrk50T2ASYI7Bye0EvekFY3IP1Nt2DHu0re+V2ZHIpMkuWg==
 
 pify@^2.0.0, pify@^2.3.0:
   version "2.3.0"
@@ -8159,9 +8159,9 @@ yallist@^2.1.2:
   integrity sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=
 
 yaml@^1.7.2:
-  version "1.8.2"
-  resolved "https://registry.yarnpkg.com/yaml/-/yaml-1.8.2.tgz#a29c03f578faafd57dcb27055f9a5d569cb0c3d9"
-  integrity sha512-omakb0d7FjMo3R1D2EbTKVIk6dAVLRxFXdLZMEUToeAvuqgG/YuHMuQOZ5fgk+vQ8cx+cnGKwyg+8g8PNT0xQg==
+  version "1.8.3"
+  resolved "https://registry.yarnpkg.com/yaml/-/yaml-1.8.3.tgz#2f420fca58b68ce3a332d0ca64be1d191dd3f87a"
+  integrity sha512-X/v7VDnK+sxbQ2Imq4Jt2PRUsRsP7UcpSl3Llg6+NRRqWLIvxkMFYtH1FmvwNGYRKKPa+EPA4qDBlI9WVG1UKw==
   dependencies:
     "@babel/runtime" "^7.8.7"