emscripten: add node dependencies for acorn-optimizer

(cherry picked from commit 48dc384a3cc28fdd8ef133df9b11ca1bd814e62e)

4 files changed, 806 insertions, 0 deletions

diff --git a/nixpkgs/pkgs/development/compilers/emscripten/default.nix b/nixpkgs/pkgs/development/compilers/emscripten/default.nix
index 314ca3f0d92a..010bddeb934b 100644
--- a/nixpkgs/pkgs/development/compilers/emscripten/default.nix
+++ b/nixpkgs/pkgs/development/compilers/emscripten/default.nix
@@ -2,6 +2,7 @@
 , jre, binaryen
 , llvmPackages_11
 , symlinkJoin, makeWrapper
+, mkYarnModules
 }:
 
 stdenv.mkDerivation rec {
@@ -14,6 +15,14 @@ stdenv.mkDerivation rec {
     paths = with llvmPackages_11; [ clang-unwrapped lld llvm ];
   };
 
+  nodeModules = mkYarnModules {
+    name = "emscripten-node-modules-${version}";
+    inherit pname version;
+    packageJSON = ./package.json;
+    yarnLock = ./yarn.lock;
+    yarnNix = ./yarn.nix;
+  };
+
   src = fetchFromGitHub {
     owner = "emscripten-core";
     repo = "emscripten";
@@ -51,6 +60,7 @@ stdenv.mkDerivation rec {
     mkdir -p $out/bin
     for b in em++ em-config emar embuilder.py emcc emcmake emconfigure emlink.py emmake emranlib emrun emscons; do
       makeWrapper $appdir/$b $out/bin/$b \
+        --set NODE_PATH ${nodeModules}/node_modules \
         --set PYTHON ${python3}/bin/python
     done
   '';
diff --git a/nixpkgs/pkgs/development/compilers/emscripten/package.json b/nixpkgs/pkgs/development/compilers/emscripten/package.json
new file mode 100644
index 000000000000..fa0feeace0c9
--- /dev/null
+++ b/nixpkgs/pkgs/development/compilers/emscripten/package.json
@@ -0,0 +1,13 @@
+{
+  "private": true,
+  "devDependencies": {
+    "ws": "~0.4.28"
+  },
+  "dependencies": {
+    "google-closure-compiler": "20200224.0.0",
+    "html-minifier-terser": "5.0.2",
+    "source-map": "0.5.6",
+    "wasm2c": "1.0.0",
+    "acorn": "7.3.1"
+  }
+}
diff --git a/nixpkgs/pkgs/development/compilers/emscripten/yarn.lock b/nixpkgs/pkgs/development/compilers/emscripten/yarn.lock
new file mode 100644
index 000000000000..079b254a4728
--- /dev/null
+++ b/nixpkgs/pkgs/development/compilers/emscripten/yarn.lock
@@ -0,0 +1,346 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+acorn@7.3.1:
+  version "7.3.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-7.3.1.tgz#85010754db53c3fbaf3b9ea3e083aa5c5d147ffd"
+  integrity sha512-tLc0wSnatxAQHVHUapaHdz72pi9KUyHjq5KyHjGg9Y8Ifdc79pTh2XvI6I1/chZbnM7QtNKzh66ooDogPZSleA==
+
+ansi-styles@^3.2.1:
+  version "3.2.1"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz#41fbb20243e50b12be0f04b8dedbf07520ce841d"
+  integrity sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==
+  dependencies:
+    color-convert "^1.9.0"
+
+buffer-from@^1.0.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.1.tgz#32713bc028f75c02fdb710d7c7bcec1f2c6070ef"
+  integrity sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==
+
+camel-case@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/camel-case/-/camel-case-3.0.0.tgz#ca3c3688a4e9cf3a4cda777dc4dcbc713249cf73"
+  integrity sha1-yjw2iKTpzzpM2nd9xNy8cTJJz3M=
+  dependencies:
+    no-case "^2.2.0"
+    upper-case "^1.1.1"
+
+chalk@2.x:
+  version "2.4.2"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.2.tgz#cd42541677a54333cf541a49108c1432b44c9424"
+  integrity sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==
+  dependencies:
+    ansi-styles "^3.2.1"
+    escape-string-regexp "^1.0.5"
+    supports-color "^5.3.0"
+
+clean-css@^4.2.1:
+  version "4.2.3"
+  resolved "https://registry.yarnpkg.com/clean-css/-/clean-css-4.2.3.tgz#507b5de7d97b48ee53d84adb0160ff6216380f78"
+  integrity sha512-VcMWDN54ZN/DS+g58HYL5/n4Zrqe8vHJpGA8KdgUXFU4fuP/aHNw8eld9SyEIyabIMJX/0RaY/fplOo5hYLSFA==
+  dependencies:
+    source-map "~0.6.0"
+
+clone-buffer@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/clone-buffer/-/clone-buffer-1.0.0.tgz#e3e25b207ac4e701af721e2cb5a16792cac3dc58"
+  integrity sha1-4+JbIHrE5wGvch4staFnksrD3Fg=
+
+clone-stats@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/clone-stats/-/clone-stats-1.0.0.tgz#b3782dff8bb5474e18b9b6bf0fdfe782f8777680"
+  integrity sha1-s3gt/4u1R04Yuba/D9/ngvh3doA=
+
+clone@^2.1.1:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/clone/-/clone-2.1.2.tgz#1b7f4b9f591f1e8f83670401600345a02887435f"
+  integrity sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18=
+
+cloneable-readable@^1.0.0:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/cloneable-readable/-/cloneable-readable-1.1.3.tgz#120a00cb053bfb63a222e709f9683ea2e11d8cec"
+  integrity sha512-2EF8zTQOxYq70Y4XKtorQupqF0m49MBz2/yf5Bj+MHjvpG3Hy7sImifnqD6UA+TKYxeSV+u6qqQPawN5UvnpKQ==
+  dependencies:
+    inherits "^2.0.1"
+    process-nextick-args "^2.0.0"
+    readable-stream "^2.3.5"
+
+color-convert@^1.9.0:
+  version "1.9.3"
+  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.3.tgz#bb71850690e1f136567de629d2d5471deda4c1e8"
+  integrity sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==
+  dependencies:
+    color-name "1.1.3"
+
+color-name@1.1.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
+  integrity sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=
+
+commander@^2.20.0:
+  version "2.20.3"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
+  integrity sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==
+
+commander@^4.0.0:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-4.1.1.tgz#9fd602bd936294e9e9ef46a3f4d6964044b18068"
+  integrity sha512-NOKm8xhkzAjzFx8B2v5OAHT+u5pRQc2UCa2Vq9jYL/31o2wi9mxBA7LIFs3sV5VSC49z6pEhfbMULvShKj26WA==
+
+commander@~2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.1.0.tgz#d121bbae860d9992a3d517ba96f56588e47c6781"
+  integrity sha1-0SG7roYNmZKj1Re6lvVliOR8Z4E=
+
+core-util-is@~1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
+  integrity sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=
+
+escape-string-regexp@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
+  integrity sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=
+
+google-closure-compiler-java@^20200224.0.0:
+  version "20200224.0.0"
+  resolved "https://registry.yarnpkg.com/google-closure-compiler-java/-/google-closure-compiler-java-20200224.0.0.tgz#03d71aefd0a07010fd8a7057d09c76f6729767bc"
+  integrity sha512-palFcDoScauZjWIsGDzMK6h+IctcRb55I3wJX8Ko/DTSz72xwadRdKm0lGt8OoYL7SKEO+IjgD7s8XrAGpLnlQ==
+
+google-closure-compiler-js@^20200224.0.0:
+  version "20200224.0.0"
+  resolved "https://registry.yarnpkg.com/google-closure-compiler-js/-/google-closure-compiler-js-20200224.0.0.tgz#cf4b598abf7be686c683e530529756805b8af500"
+  integrity sha512-70VKN0kbnTRtu2dqxDjWZQGfEQIHj7b7oUUCsYPO5oEXCDfgxNc13oYUJXvrTONLRWlHCNl/I8FNrVOwZ3gY/g==
+
+google-closure-compiler-linux@^20200224.0.0:
+  version "20200224.0.0"
+  resolved "https://registry.yarnpkg.com/google-closure-compiler-linux/-/google-closure-compiler-linux-20200224.0.0.tgz#d9608b224b4d8f38d4d34e99a24da54bca6b1902"
+  integrity sha512-/BaE889EPrXWOKJVolA9++e99xBDMzeFBf7zF7nBB8PUmU5DlvtsoLL82xnT6nbZC1ktHaETlVx+vYGju8zKBQ==
+
+google-closure-compiler-osx@^20200224.0.0:
+  version "20200224.0.0"
+  resolved "https://registry.yarnpkg.com/google-closure-compiler-osx/-/google-closure-compiler-osx-20200224.0.0.tgz#aee62d8b878a662fc73b92419603168c0c3a35ed"
+  integrity sha512-WXVNW9nPUqjvCe38mUIlBGEPVPCTKLtdaXC+q+kQdonkJFHNrpdyYWa746Y8cNP/byQyDNpPsqcKseZTLh17sQ==
+
+google-closure-compiler-windows@^20200224.0.0:
+  version "20200224.0.0"
+  resolved "https://registry.yarnpkg.com/google-closure-compiler-windows/-/google-closure-compiler-windows-20200224.0.0.tgz#cae323b898625ca57b0e87aaddde021a414dda58"
+  integrity sha512-l6w2D8r9+GC9CQTAYEMAuNI996Zb6YV5qG7+FR0gCoL6h6S3Mc7mi87bafgwaicsVcmmHE/9kCBuW4ZyTMs5Fg==
+
+google-closure-compiler@20200224.0.0:
+  version "20200224.0.0"
+  resolved "https://registry.yarnpkg.com/google-closure-compiler/-/google-closure-compiler-20200224.0.0.tgz#ec0e708d9716a48e12fff43fe37fa5cec732a283"
+  integrity sha512-V81dRYygdHbZtOtU16VX26xAdJBB1UZyfSg3OTzdNl3l/xEIx1D/L7TYUqjeTXsxcy+JruJ/UfUlIJAOaMRTog==
+  dependencies:
+    chalk "2.x"
+    google-closure-compiler-java "^20200224.0.0"
+    google-closure-compiler-js "^20200224.0.0"
+    minimist "1.x"
+    vinyl "2.x"
+    vinyl-sourcemaps-apply "^0.2.0"
+  optionalDependencies:
+    google-closure-compiler-linux "^20200224.0.0"
+    google-closure-compiler-osx "^20200224.0.0"
+    google-closure-compiler-windows "^20200224.0.0"
+
+has-flag@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
+  integrity sha1-tdRU3CGZriJWmfNGfloH87lVuv0=
+
+he@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/he/-/he-1.2.0.tgz#84ae65fa7eafb165fddb61566ae14baf05664f0f"
+  integrity sha512-F/1DnUGPopORZi0ni+CvrCgHQ5FyEAHRLSApuYWMmrbSwoN2Mn/7k+Gl38gJnR7yyDZk6WLXwiGod1JOWNDKGw==
+
+html-minifier-terser@5.0.2:
+  version "5.0.2"
+  resolved "https://registry.yarnpkg.com/html-minifier-terser/-/html-minifier-terser-5.0.2.tgz#0e67a0b062ae1dd0719fc73199479298f807ae16"
+  integrity sha512-VAaitmbBuHaPKv9bj47XKypRhgDxT/cDLvsPiiF7w+omrN3K0eQhpigV9Z1ilrmHa9e0rOYcD6R/+LCDADGcnQ==
+  dependencies:
+    camel-case "^3.0.0"
+    clean-css "^4.2.1"
+    commander "^4.0.0"
+    he "^1.2.0"
+    param-case "^2.1.1"
+    relateurl "^0.2.7"
+    terser "^4.3.9"
+
+inherits@^2.0.1, inherits@~2.0.3:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz#0fa2c64f932917c3433a0ded55363aae37416b7c"
+  integrity sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==
+
+isarray@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
+  integrity sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=
+
+lower-case@^1.1.1:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/lower-case/-/lower-case-1.1.4.tgz#9a2cabd1b9e8e0ae993a4bf7d5875c39c42e8eac"
+  integrity sha1-miyr0bno4K6ZOkv31YdcOcQujqw=
+
+minimist@1.x:
+  version "1.2.5"
+  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.5.tgz#67d66014b66a6a8aaa0c083c5fd58df4e4e97602"
+  integrity sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==
+
+nan@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/nan/-/nan-1.0.0.tgz#ae24f8850818d662fcab5acf7f3b95bfaa2ccf38"
+  integrity sha1-riT4hQgY1mL8q1rPfzuVv6oszzg=
+
+no-case@^2.2.0:
+  version "2.3.2"
+  resolved "https://registry.yarnpkg.com/no-case/-/no-case-2.3.2.tgz#60b813396be39b3f1288a4c1ed5d1e7d28b464ac"
+  integrity sha512-rmTZ9kz+f3rCvK2TD1Ue/oZlns7OGoIWP4fc3llxxRXlOkHKoWPPWJOfFYpITabSow43QJbRIoHQXtt10VldyQ==
+  dependencies:
+    lower-case "^1.1.1"
+
+options@>=0.0.5:
+  version "0.0.6"
+  resolved "https://registry.yarnpkg.com/options/-/options-0.0.6.tgz#ec22d312806bb53e731773e7cdaefcf1c643128f"
+  integrity sha1-7CLTEoBrtT5zF3Pnza788cZDEo8=
+
+param-case@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/param-case/-/param-case-2.1.1.tgz#df94fd8cf6531ecf75e6bef9a0858fbc72be2247"
+  integrity sha1-35T9jPZTHs915r75oIWPvHK+Ikc=
+  dependencies:
+    no-case "^2.2.0"
+
+process-nextick-args@^2.0.0, process-nextick-args@~2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-2.0.1.tgz#7820d9b16120cc55ca9ae7792680ae7dba6d7fe2"
+  integrity sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==
+
+readable-stream@^2.3.5:
+  version "2.3.7"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.7.tgz#1eca1cf711aef814c04f62252a36a62f6cb23b57"
+  integrity sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==
+  dependencies:
+    core-util-is "~1.0.0"
+    inherits "~2.0.3"
+    isarray "~1.0.0"
+    process-nextick-args "~2.0.0"
+    safe-buffer "~5.1.1"
+    string_decoder "~1.1.1"
+    util-deprecate "~1.0.1"
+
+relateurl@^0.2.7:
+  version "0.2.7"
+  resolved "https://registry.yarnpkg.com/relateurl/-/relateurl-0.2.7.tgz#54dbf377e51440aca90a4cd274600d3ff2d888a9"
+  integrity sha1-VNvzd+UUQKypCkzSdGANP/LYiKk=
+
+remove-trailing-separator@^1.0.1:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/remove-trailing-separator/-/remove-trailing-separator-1.1.0.tgz#c24bce2a283adad5bc3f58e0d48249b92379d8ef"
+  integrity sha1-wkvOKig62tW8P1jg1IJJuSN52O8=
+
+replace-ext@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/replace-ext/-/replace-ext-1.0.1.tgz#2d6d996d04a15855d967443631dd5f77825b016a"
+  integrity sha512-yD5BHCe7quCgBph4rMQ+0KkIRKwWCrHDOX1p1Gp6HwjPM5kVoCdKGNhN7ydqqsX6lJEnQDKZ/tFMiEdQ1dvPEw==
+
+safe-buffer@~5.1.0, safe-buffer@~5.1.1:
+  version "5.1.2"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
+  integrity sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==
+
+source-map-support@~0.5.12:
+  version "0.5.19"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.19.tgz#a98b62f86dcaf4f67399648c085291ab9e8fed61"
+  integrity sha512-Wonm7zOCIJzBGQdB+thsPar0kYuCIzYvxZwlBa87yi/Mdjv7Tip2cyVbLj5o0cFPN4EVkuTwb3GDDyUx2DGnGw==
+  dependencies:
+    buffer-from "^1.0.0"
+    source-map "^0.6.0"
+
+source-map@0.5.6:
+  version "0.5.6"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.6.tgz#75ce38f52bf0733c5a7f0c118d81334a2bb5f412"
+  integrity sha1-dc449SvwczxafwwRjYEzSiu19BI=
+
+source-map@^0.5.1:
+  version "0.5.7"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
+  integrity sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=
+
+source-map@^0.6.0, source-map@~0.6.0, source-map@~0.6.1:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
+  integrity sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==
+
+string_decoder@~1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.1.1.tgz#9cf1611ba62685d7030ae9e4ba34149c3af03fc8"
+  integrity sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==
+  dependencies:
+    safe-buffer "~5.1.0"
+
+supports-color@^5.3.0:
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.5.0.tgz#e2e69a44ac8772f78a1ec0b35b689df6530efc8f"
+  integrity sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==
+  dependencies:
+    has-flag "^3.0.0"
+
+terser@^4.3.9:
+  version "4.8.0"
+  resolved "https://registry.yarnpkg.com/terser/-/terser-4.8.0.tgz#63056343d7c70bb29f3af665865a46fe03a0df17"
+  integrity sha512-EAPipTNeWsb/3wLPeup1tVPaXfIaU68xMnVdPafIL1TV05OhASArYyIfFvnvJCNrR2NIOvDVNNTFRa+Re2MWyw==
+  dependencies:
+    commander "^2.20.0"
+    source-map "~0.6.1"
+    source-map-support "~0.5.12"
+
+tinycolor@0.x:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/tinycolor/-/tinycolor-0.0.1.tgz#320b5a52d83abb5978d81a3e887d4aefb15a6164"
+  integrity sha1-MgtaUtg6u1l42Bo+iH1K77FaYWQ=
+
+upper-case@^1.1.1:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/upper-case/-/upper-case-1.1.3.tgz#f6b4501c2ec4cdd26ba78be7222961de77621598"
+  integrity sha1-9rRQHC7EzdJrp4vnIilh3ndiFZg=
+
+util-deprecate@~1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
+  integrity sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=
+
+vinyl-sourcemaps-apply@^0.2.0:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/vinyl-sourcemaps-apply/-/vinyl-sourcemaps-apply-0.2.1.tgz#ab6549d61d172c2b1b87be5c508d239c8ef87705"
+  integrity sha1-q2VJ1h0XLCsbh75cUI0jnI74dwU=
+  dependencies:
+    source-map "^0.5.1"
+
+vinyl@2.x:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/vinyl/-/vinyl-2.2.0.tgz#d85b07da96e458d25b2ffe19fece9f2caa13ed86"
+  integrity sha512-MBH+yP0kC/GQ5GwBqrTPTzEfiiLjta7hTtvQtbxBgTeSXsmKQRQecjibMbxIXzVT3Y9KJK+drOz1/k+vsu8Nkg==
+  dependencies:
+    clone "^2.1.1"
+    clone-buffer "^1.0.0"
+    clone-stats "^1.0.0"
+    cloneable-readable "^1.0.0"
+    remove-trailing-separator "^1.0.1"
+    replace-ext "^1.0.0"
+
+wasm2c@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/wasm2c/-/wasm2c-1.0.0.tgz#761671e141c46b8a7c6c54429db1e6bfa3cd0ec0"
+  integrity sha512-4SIESF2JNxrry6XFa/UQcsQibn+bxPkQ/oqixiXz2o8fsMl8J4vtvhH/evgbi8vZajAlaukuihEcQTWb9tVLUA==
+
+ws@~0.4.28:
+  version "0.4.32"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-0.4.32.tgz#787a6154414f3c99ed83c5772153b20feb0cec32"
+  integrity sha1-eHphVEFPPJntg8V3IVOyD+sM7DI=
+  dependencies:
+    commander "~2.1.0"
+    nan "~1.0.0"
+    options ">=0.0.5"
+    tinycolor "0.x"
diff --git a/nixpkgs/pkgs/development/compilers/emscripten/yarn.nix b/nixpkgs/pkgs/development/compilers/emscripten/yarn.nix
new file mode 100644
index 000000000000..af01d9c6869b
--- /dev/null
+++ b/nixpkgs/pkgs/development/compilers/emscripten/yarn.nix
@@ -0,0 +1,437 @@
+{ fetchurl, fetchgit, linkFarm, runCommandNoCC, gnutar }: rec {
+  offline_cache = linkFarm "offline" packages;
+  packages = [
+    {
+      name = "acorn___acorn_7.3.1.tgz";
+      path = fetchurl {
+        name = "acorn___acorn_7.3.1.tgz";
+        url  = "https://registry.yarnpkg.com/acorn/-/acorn-7.3.1.tgz";
+        sha1 = "85010754db53c3fbaf3b9ea3e083aa5c5d147ffd";
+      };
+    }
+    {
+      name = "ansi_styles___ansi_styles_3.2.1.tgz";
+      path = fetchurl {
+        name = "ansi_styles___ansi_styles_3.2.1.tgz";
+        url  = "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz";
+        sha1 = "41fbb20243e50b12be0f04b8dedbf07520ce841d";
+      };
+    }
+    {
+      name = "buffer_from___buffer_from_1.1.1.tgz";
+      path = fetchurl {
+        name = "buffer_from___buffer_from_1.1.1.tgz";
+        url  = "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.1.tgz";
+        sha1 = "32713bc028f75c02fdb710d7c7bcec1f2c6070ef";
+      };
+    }
+    {
+      name = "camel_case___camel_case_3.0.0.tgz";
+      path = fetchurl {
+        name = "camel_case___camel_case_3.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/camel-case/-/camel-case-3.0.0.tgz";
+        sha1 = "ca3c3688a4e9cf3a4cda777dc4dcbc713249cf73";
+      };
+    }
+    {
+      name = "chalk___chalk_2.4.2.tgz";
+      path = fetchurl {
+        name = "chalk___chalk_2.4.2.tgz";
+        url  = "https://registry.yarnpkg.com/chalk/-/chalk-2.4.2.tgz";
+        sha1 = "cd42541677a54333cf541a49108c1432b44c9424";
+      };
+    }
+    {
+      name = "clean_css___clean_css_4.2.3.tgz";
+      path = fetchurl {
+        name = "clean_css___clean_css_4.2.3.tgz";
+        url  = "https://registry.yarnpkg.com/clean-css/-/clean-css-4.2.3.tgz";
+        sha1 = "507b5de7d97b48ee53d84adb0160ff6216380f78";
+      };
+    }
+    {
+      name = "clone_buffer___clone_buffer_1.0.0.tgz";
+      path = fetchurl {
+        name = "clone_buffer___clone_buffer_1.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/clone-buffer/-/clone-buffer-1.0.0.tgz";
+        sha1 = "e3e25b207ac4e701af721e2cb5a16792cac3dc58";
+      };
+    }
+    {
+      name = "clone_stats___clone_stats_1.0.0.tgz";
+      path = fetchurl {
+        name = "clone_stats___clone_stats_1.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/clone-stats/-/clone-stats-1.0.0.tgz";
+        sha1 = "b3782dff8bb5474e18b9b6bf0fdfe782f8777680";
+      };
+    }
+    {
+      name = "clone___clone_2.1.2.tgz";
+      path = fetchurl {
+        name = "clone___clone_2.1.2.tgz";
+        url  = "https://registry.yarnpkg.com/clone/-/clone-2.1.2.tgz";
+        sha1 = "1b7f4b9f591f1e8f83670401600345a02887435f";
+      };
+    }
+    {
+      name = "cloneable_readable___cloneable_readable_1.1.3.tgz";
+      path = fetchurl {
+        name = "cloneable_readable___cloneable_readable_1.1.3.tgz";
+        url  = "https://registry.yarnpkg.com/cloneable-readable/-/cloneable-readable-1.1.3.tgz";
+        sha1 = "120a00cb053bfb63a222e709f9683ea2e11d8cec";
+      };
+    }
+    {
+      name = "color_convert___color_convert_1.9.3.tgz";
+      path = fetchurl {
+        name = "color_convert___color_convert_1.9.3.tgz";
+        url  = "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.3.tgz";
+        sha1 = "bb71850690e1f136567de629d2d5471deda4c1e8";
+      };
+    }
+    {
+      name = "color_name___color_name_1.1.3.tgz";
+      path = fetchurl {
+        name = "color_name___color_name_1.1.3.tgz";
+        url  = "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz";
+        sha1 = "a7d0558bd89c42f795dd42328f740831ca53bc25";
+      };
+    }
+    {
+      name = "commander___commander_2.20.3.tgz";
+      path = fetchurl {
+        name = "commander___commander_2.20.3.tgz";
+        url  = "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz";
+        sha1 = "fd485e84c03eb4881c20722ba48035e8531aeb33";
+      };
+    }
+    {
+      name = "commander___commander_4.1.1.tgz";
+      path = fetchurl {
+        name = "commander___commander_4.1.1.tgz";
+        url  = "https://registry.yarnpkg.com/commander/-/commander-4.1.1.tgz";
+        sha1 = "9fd602bd936294e9e9ef46a3f4d6964044b18068";
+      };
+    }
+    {
+      name = "commander___commander_2.1.0.tgz";
+      path = fetchurl {
+        name = "commander___commander_2.1.0.tgz";
+        url  = "https://registry.yarnpkg.com/commander/-/commander-2.1.0.tgz";
+        sha1 = "d121bbae860d9992a3d517ba96f56588e47c6781";
+      };
+    }
+    {
+      name = "core_util_is___core_util_is_1.0.2.tgz";
+      path = fetchurl {
+        name = "core_util_is___core_util_is_1.0.2.tgz";
+        url  = "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz";
+        sha1 = "b5fd54220aa2bc5ab57aab7140c940754503c1a7";
+      };
+    }
+    {
+      name = "escape_string_regexp___escape_string_regexp_1.0.5.tgz";
+      path = fetchurl {
+        name = "escape_string_regexp___escape_string_regexp_1.0.5.tgz";
+        url  = "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz";
+        sha1 = "1b61c0562190a8dff6ae3bb2cf0200ca130b86d4";
+      };
+    }
+    {
+      name = "google_closure_compiler_java___google_closure_compiler_java_20200224.0.0.tgz";
+      path = fetchurl {
+        name = "google_closure_compiler_java___google_closure_compiler_java_20200224.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/google-closure-compiler-java/-/google-closure-compiler-java-20200224.0.0.tgz";
+        sha1 = "03d71aefd0a07010fd8a7057d09c76f6729767bc";
+      };
+    }
+    {
+      name = "google_closure_compiler_js___google_closure_compiler_js_20200224.0.0.tgz";
+      path = fetchurl {
+        name = "google_closure_compiler_js___google_closure_compiler_js_20200224.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/google-closure-compiler-js/-/google-closure-compiler-js-20200224.0.0.tgz";
+        sha1 = "cf4b598abf7be686c683e530529756805b8af500";
+      };
+    }
+    {
+      name = "google_closure_compiler_linux___google_closure_compiler_linux_20200224.0.0.tgz";
+      path = fetchurl {
+        name = "google_closure_compiler_linux___google_closure_compiler_linux_20200224.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/google-closure-compiler-linux/-/google-closure-compiler-linux-20200224.0.0.tgz";
+        sha1 = "d9608b224b4d8f38d4d34e99a24da54bca6b1902";
+      };
+    }
+    {
+      name = "google_closure_compiler_osx___google_closure_compiler_osx_20200224.0.0.tgz";
+      path = fetchurl {
+        name = "google_closure_compiler_osx___google_closure_compiler_osx_20200224.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/google-closure-compiler-osx/-/google-closure-compiler-osx-20200224.0.0.tgz";
+        sha1 = "aee62d8b878a662fc73b92419603168c0c3a35ed";
+      };
+    }
+    {
+      name = "google_closure_compiler_windows___google_closure_compiler_windows_20200224.0.0.tgz";
+      path = fetchurl {
+        name = "google_closure_compiler_windows___google_closure_compiler_windows_20200224.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/google-closure-compiler-windows/-/google-closure-compiler-windows-20200224.0.0.tgz";
+        sha1 = "cae323b898625ca57b0e87aaddde021a414dda58";
+      };
+    }
+    {
+      name = "google_closure_compiler___google_closure_compiler_20200224.0.0.tgz";
+      path = fetchurl {
+        name = "google_closure_compiler___google_closure_compiler_20200224.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/google-closure-compiler/-/google-closure-compiler-20200224.0.0.tgz";
+        sha1 = "ec0e708d9716a48e12fff43fe37fa5cec732a283";
+      };
+    }
+    {
+      name = "has_flag___has_flag_3.0.0.tgz";
+      path = fetchurl {
+        name = "has_flag___has_flag_3.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz";
+        sha1 = "b5d454dc2199ae225699f3467e5a07f3b955bafd";
+      };
+    }
+    {
+      name = "he___he_1.2.0.tgz";
+      path = fetchurl {
+        name = "he___he_1.2.0.tgz";
+        url  = "https://registry.yarnpkg.com/he/-/he-1.2.0.tgz";
+        sha1 = "84ae65fa7eafb165fddb61566ae14baf05664f0f";
+      };
+    }
+    {
+      name = "html_minifier_terser___html_minifier_terser_5.0.2.tgz";
+      path = fetchurl {
+        name = "html_minifier_terser___html_minifier_terser_5.0.2.tgz";
+        url  = "https://registry.yarnpkg.com/html-minifier-terser/-/html-minifier-terser-5.0.2.tgz";
+        sha1 = "0e67a0b062ae1dd0719fc73199479298f807ae16";
+      };
+    }
+    {
+      name = "inherits___inherits_2.0.4.tgz";
+      path = fetchurl {
+        name = "inherits___inherits_2.0.4.tgz";
+        url  = "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz";
+        sha1 = "0fa2c64f932917c3433a0ded55363aae37416b7c";
+      };
+    }
+    {
+      name = "isarray___isarray_1.0.0.tgz";
+      path = fetchurl {
+        name = "isarray___isarray_1.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz";
+        sha1 = "bb935d48582cba168c06834957a54a3e07124f11";
+      };
+    }
+    {
+      name = "lower_case___lower_case_1.1.4.tgz";
+      path = fetchurl {
+        name = "lower_case___lower_case_1.1.4.tgz";
+        url  = "https://registry.yarnpkg.com/lower-case/-/lower-case-1.1.4.tgz";
+        sha1 = "9a2cabd1b9e8e0ae993a4bf7d5875c39c42e8eac";
+      };
+    }
+    {
+      name = "minimist___minimist_1.2.5.tgz";
+      path = fetchurl {
+        name = "minimist___minimist_1.2.5.tgz";
+        url  = "https://registry.yarnpkg.com/minimist/-/minimist-1.2.5.tgz";
+        sha1 = "67d66014b66a6a8aaa0c083c5fd58df4e4e97602";
+      };
+    }
+    {
+      name = "nan___nan_1.0.0.tgz";
+      path = fetchurl {
+        name = "nan___nan_1.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/nan/-/nan-1.0.0.tgz";
+        sha1 = "ae24f8850818d662fcab5acf7f3b95bfaa2ccf38";
+      };
+    }
+    {
+      name = "no_case___no_case_2.3.2.tgz";
+      path = fetchurl {
+        name = "no_case___no_case_2.3.2.tgz";
+        url  = "https://registry.yarnpkg.com/no-case/-/no-case-2.3.2.tgz";
+        sha1 = "60b813396be39b3f1288a4c1ed5d1e7d28b464ac";
+      };
+    }
+    {
+      name = "options___options_0.0.6.tgz";
+      path = fetchurl {
+        name = "options___options_0.0.6.tgz";
+        url  = "https://registry.yarnpkg.com/options/-/options-0.0.6.tgz";
+        sha1 = "ec22d312806bb53e731773e7cdaefcf1c643128f";
+      };
+    }
+    {
+      name = "param_case___param_case_2.1.1.tgz";
+      path = fetchurl {
+        name = "param_case___param_case_2.1.1.tgz";
+        url  = "https://registry.yarnpkg.com/param-case/-/param-case-2.1.1.tgz";
+        sha1 = "df94fd8cf6531ecf75e6bef9a0858fbc72be2247";
+      };
+    }
+    {
+      name = "process_nextick_args___process_nextick_args_2.0.1.tgz";
+      path = fetchurl {
+        name = "process_nextick_args___process_nextick_args_2.0.1.tgz";
+        url  = "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-2.0.1.tgz";
+        sha1 = "7820d9b16120cc55ca9ae7792680ae7dba6d7fe2";
+      };
+    }
+    {
+      name = "readable_stream___readable_stream_2.3.7.tgz";
+      path = fetchurl {
+        name = "readable_stream___readable_stream_2.3.7.tgz";
+        url  = "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.7.tgz";
+        sha1 = "1eca1cf711aef814c04f62252a36a62f6cb23b57";
+      };
+    }
+    {
+      name = "relateurl___relateurl_0.2.7.tgz";
+      path = fetchurl {
+        name = "relateurl___relateurl_0.2.7.tgz";
+        url  = "https://registry.yarnpkg.com/relateurl/-/relateurl-0.2.7.tgz";
+        sha1 = "54dbf377e51440aca90a4cd274600d3ff2d888a9";
+      };
+    }
+    {
+      name = "remove_trailing_separator___remove_trailing_separator_1.1.0.tgz";
+      path = fetchurl {
+        name = "remove_trailing_separator___remove_trailing_separator_1.1.0.tgz";
+        url  = "https://registry.yarnpkg.com/remove-trailing-separator/-/remove-trailing-separator-1.1.0.tgz";
+        sha1 = "c24bce2a283adad5bc3f58e0d48249b92379d8ef";
+      };
+    }
+    {
+      name = "replace_ext___replace_ext_1.0.1.tgz";
+      path = fetchurl {
+        name = "replace_ext___replace_ext_1.0.1.tgz";
+        url  = "https://registry.yarnpkg.com/replace-ext/-/replace-ext-1.0.1.tgz";
+        sha1 = "2d6d996d04a15855d967443631dd5f77825b016a";
+      };
+    }
+    {
+      name = "safe_buffer___safe_buffer_5.1.2.tgz";
+      path = fetchurl {
+        name = "safe_buffer___safe_buffer_5.1.2.tgz";
+        url  = "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz";
+        sha1 = "991ec69d296e0313747d59bdfd2b745c35f8828d";
+      };
+    }
+    {
+      name = "source_map_support___source_map_support_0.5.19.tgz";
+      path = fetchurl {
+        name = "source_map_support___source_map_support_0.5.19.tgz";
+        url  = "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.19.tgz";
+        sha1 = "a98b62f86dcaf4f67399648c085291ab9e8fed61";
+      };
+    }
+    {
+      name = "source_map___source_map_0.5.6.tgz";
+      path = fetchurl {
+        name = "source_map___source_map_0.5.6.tgz";
+        url  = "https://registry.yarnpkg.com/source-map/-/source-map-0.5.6.tgz";
+        sha1 = "75ce38f52bf0733c5a7f0c118d81334a2bb5f412";
+      };
+    }
+    {
+      name = "source_map___source_map_0.5.7.tgz";
+      path = fetchurl {
+        name = "source_map___source_map_0.5.7.tgz";
+        url  = "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz";
+        sha1 = "8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc";
+      };
+    }
+    {
+      name = "source_map___source_map_0.6.1.tgz";
+      path = fetchurl {
+        name = "source_map___source_map_0.6.1.tgz";
+        url  = "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz";
+        sha1 = "74722af32e9614e9c287a8d0bbde48b5e2f1a263";
+      };
+    }
+    {
+      name = "string_decoder___string_decoder_1.1.1.tgz";
+      path = fetchurl {
+        name = "string_decoder___string_decoder_1.1.1.tgz";
+        url  = "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.1.1.tgz";
+        sha1 = "9cf1611ba62685d7030ae9e4ba34149c3af03fc8";
+      };
+    }
+    {
+      name = "supports_color___supports_color_5.5.0.tgz";
+      path = fetchurl {
+        name = "supports_color___supports_color_5.5.0.tgz";
+        url  = "https://registry.yarnpkg.com/supports-color/-/supports-color-5.5.0.tgz";
+        sha1 = "e2e69a44ac8772f78a1ec0b35b689df6530efc8f";
+      };
+    }
+    {
+      name = "terser___terser_4.8.0.tgz";
+      path = fetchurl {
+        name = "terser___terser_4.8.0.tgz";
+        url  = "https://registry.yarnpkg.com/terser/-/terser-4.8.0.tgz";
+        sha1 = "63056343d7c70bb29f3af665865a46fe03a0df17";
+      };
+    }
+    {
+      name = "tinycolor___tinycolor_0.0.1.tgz";
+      path = fetchurl {
+        name = "tinycolor___tinycolor_0.0.1.tgz";
+        url  = "https://registry.yarnpkg.com/tinycolor/-/tinycolor-0.0.1.tgz";
+        sha1 = "320b5a52d83abb5978d81a3e887d4aefb15a6164";
+      };
+    }
+    {
+      name = "upper_case___upper_case_1.1.3.tgz";
+      path = fetchurl {
+        name = "upper_case___upper_case_1.1.3.tgz";
+        url  = "https://registry.yarnpkg.com/upper-case/-/upper-case-1.1.3.tgz";
+        sha1 = "f6b4501c2ec4cdd26ba78be7222961de77621598";
+      };
+    }
+    {
+      name = "util_deprecate___util_deprecate_1.0.2.tgz";
+      path = fetchurl {
+        name = "util_deprecate___util_deprecate_1.0.2.tgz";
+        url  = "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz";
+        sha1 = "450d4dc9fa70de732762fbd2d4a28981419a0ccf";
+      };
+    }
+    {
+      name = "vinyl_sourcemaps_apply___vinyl_sourcemaps_apply_0.2.1.tgz";
+      path = fetchurl {
+        name = "vinyl_sourcemaps_apply___vinyl_sourcemaps_apply_0.2.1.tgz";
+        url  = "https://registry.yarnpkg.com/vinyl-sourcemaps-apply/-/vinyl-sourcemaps-apply-0.2.1.tgz";
+        sha1 = "ab6549d61d172c2b1b87be5c508d239c8ef87705";
+      };
+    }
+    {
+      name = "vinyl___vinyl_2.2.0.tgz";
+      path = fetchurl {
+        name = "vinyl___vinyl_2.2.0.tgz";
+        url  = "https://registry.yarnpkg.com/vinyl/-/vinyl-2.2.0.tgz";
+        sha1 = "d85b07da96e458d25b2ffe19fece9f2caa13ed86";
+      };
+    }
+    {
+      name = "wasm2c___wasm2c_1.0.0.tgz";
+      path = fetchurl {
+        name = "wasm2c___wasm2c_1.0.0.tgz";
+        url  = "https://registry.yarnpkg.com/wasm2c/-/wasm2c-1.0.0.tgz";
+        sha1 = "761671e141c46b8a7c6c54429db1e6bfa3cd0ec0";
+      };
+    }
+    {
+      name = "ws___ws_0.4.32.tgz";
+      path = fetchurl {
+        name = "ws___ws_0.4.32.tgz";
+        url  = "https://registry.yarnpkg.com/ws/-/ws-0.4.32.tgz";
+        sha1 = "787a6154414f3c99ed83c5772153b20feb0cec32";
+      };
+    }
+  ];
+}