diff --git a/11.nodejs_signal/yarn.lock b/11.nodejs_signal/yarn.lock
index 5f16cdb..1256bca 100644
--- a/11.nodejs_signal/yarn.lock
+++ b/11.nodejs_signal/yarn.lock
@@ -1,321 +1,288 @@
-# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
-# yarn lockfile v1
-
-
-accepts@~1.3.4:
-  version "1.3.7"
-  resolved "https://registry.npm.taobao.org/accepts/download/accepts-1.3.7.tgz#531bc726517a3b2b41f850021c6cc15eaab507cd"
-  integrity sha1-UxvHJlF6OytB+FACHGzBXqq1B80=
-  dependencies:
-    mime-types "~2.1.24"
-    negotiator "0.6.2"
-
-after@0.8.2:
-  version "0.8.2"
-  resolved "https://registry.npm.taobao.org/after/download/after-0.8.2.tgz#fedb394f9f0e02aa9768e702bda23b505fae7e1f"
-  integrity sha1-/ts5T58OAqqXaOcCvaI7UF+ufh8=
-
-arraybuffer.slice@~0.0.7:
-  version "0.0.7"
-  resolved "https://registry.npm.taobao.org/arraybuffer.slice/download/arraybuffer.slice-0.0.7.tgz#3bbc4275dd584cc1b10809b89d4e8b63a69e7675"
-  integrity sha1-O7xCdd1YTMGxCAm4nU6LY6aednU=
-
-async-limiter@^1.0.0, async-limiter@~1.0.0:
-  version "1.0.1"
-  resolved "https://registry.npm.taobao.org/async-limiter/download/async-limiter-1.0.1.tgz#dd379e94f0db8310b08291f9d64c3209766617fd"
-  integrity sha1-3TeelPDbgxCwgpH51kwyCXZmF/0=
-
-backo2@1.0.2:
-  version "1.0.2"
-  resolved "https://registry.npm.taobao.org/backo2/download/backo2-1.0.2.tgz#31ab1ac8b129363463e35b3ebb69f4dfcfba7947"
-  integrity sha1-MasayLEpNjRj41s+u2n038+6eUc=
-
-base64-arraybuffer@0.1.5:
-  version "0.1.5"
-  resolved "https://registry.npm.taobao.org/base64-arraybuffer/download/base64-arraybuffer-0.1.5.tgz#73926771923b5a19747ad666aa5cd4bf9c6e9ce8"
-  integrity sha1-c5JncZI7Whl0etZmqlzUv5xunOg=
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-  version "2.0.0"
-  resolved "https://registry.npm.taobao.org/base64id/download/base64id-2.0.0.tgz#2770ac6bc47d312af97a8bf9a634342e0cd25cb6"
-  integrity sha1-J3Csa8R9MSr5eov5pjQ0LgzSXLY=
-
-better-assert@~1.0.0:
-  version "1.0.2"
-  resolved "https://registry.npm.taobao.org/better-assert/download/better-assert-1.0.2.tgz#40866b9e1b9e0b55b481894311e68faffaebc522"
-  integrity sha1-QIZrnhueC1W0gYlDEeaPr/rrxSI=
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-blob@0.0.5:
-  version "0.0.5"
-  resolved "https://registry.npm.taobao.org/blob/download/blob-0.0.5.tgz#d680eeef25f8cd91ad533f5b01eed48e64caf683"
-  integrity sha1-1oDu7yX4zZGtUz9bAe7UjmTK9oM=
-
-callsite@1.0.0:
-  version "1.0.0"
-  resolved "https://registry.npm.taobao.org/callsite/download/callsite-1.0.0.tgz#280398e5d664bd74038b6f0905153e6e8af1bc20"
-  integrity sha1-KAOY5dZkvXQDi28JBRU+borxvCA=
-
-colors@>=0.6.0:
-  version "1.4.0"
-  resolved "https://registry.npm.taobao.org/colors/download/colors-1.4.0.tgz#c50491479d4c1bdaed2c9ced32cf7c7dc2360f78"
-  integrity sha1-xQSRR51MG9rtLJztMs98fcI2D3g=
-
-component-bind@1.0.0:
-  version "1.0.0"
-  resolved "https://registry.npm.taobao.org/component-bind/download/component-bind-1.0.0.tgz#00c608ab7dcd93897c0009651b1d3a8e1e73bbd1"
-  integrity sha1-AMYIq33Nk4l8AAllGx06jh5zu9E=
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-  resolved "https://registry.npm.taobao.org/component-emitter/download/component-emitter-1.2.1.tgz#137918d6d78283f7df7a6b7c5a63e140e69425e6"
-  integrity sha1-E3kY1teCg/ffemt8WmPhQOaUJeY=
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-  version "0.0.3"
-  resolved "https://registry.npm.taobao.org/component-inherit/download/component-inherit-0.0.3.tgz#645fc4adf58b72b649d5cae65135619db26ff143"
-  integrity sha1-ZF/ErfWLcrZJ1crmUTVhnbJv8UM=
-
-cookie@0.3.1:
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-  resolved "https://registry.npm.taobao.org/cookie/download/cookie-0.3.1.tgz#e7e0a1f9ef43b4c8ba925c5c5a96e806d16873bb"
-  integrity sha1-5+Ch+e9DtMi6klxcWpboBtFoc7s=
-
-debug@~3.1.0:
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-  resolved "https://registry.npm.taobao.org/debug/download/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
-  integrity sha1-W7WgZyYotkFJVmuhaBnmFRjGcmE=
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-debug@~4.1.0:
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-  resolved "https://registry.npm.taobao.org/debug/download/debug-4.1.1.tgz#3b72260255109c6b589cee050f1d516139664791"
-  integrity sha1-O3ImAlUQnGtYnO4FDx1RYTlmR5E=
-  dependencies:
-    ms "^2.1.1"
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-  resolved "https://registry.npm.taobao.org/engine.io-client/download/engine.io-client-3.4.0.tgz#82a642b42862a9b3f7a188f41776b2deab643700"
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-    ws "~6.1.0"
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-  resolved "https://registry.npm.taobao.org/engine.io-parser/download/engine.io-parser-2.2.0.tgz?cache=0&sync_timestamp=1568365756037&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fengine.io-parser%2Fdownload%2Fengine.io-parser-2.2.0.tgz#312c4894f57d52a02b420868da7b5c1c84af80ed"
-  integrity sha1-MSxIlPV9UqArQgho2ntcHISvgO0=
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-engine.io@~3.4.0:
-  version "3.4.0"
-  resolved "https://registry.npm.taobao.org/engine.io/download/engine.io-3.4.0.tgz#3a962cc4535928c252759a00f98519cb46c53ff3"
-  integrity sha1-OpYsxFNZKMJSdZoA+YUZy0bFP/M=
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-    base64id "2.0.0"
-    cookie "0.3.1"
-    debug "~4.1.0"
-    engine.io-parser "~2.2.0"
-    ws "^7.1.2"
-
-has-binary2@~1.0.2:
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-  resolved "https://registry.npm.taobao.org/has-binary2/download/has-binary2-1.0.3.tgz#7776ac627f3ea77250cfc332dab7ddf5e4f5d11d"
-  integrity sha1-d3asYn8+p3JQz8My2rfd9eT10R0=
-  dependencies:
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-  version "1.1.0"
-  resolved "https://registry.npm.taobao.org/has-cors/download/has-cors-1.1.0.tgz#5e474793f7ea9843d1bb99c23eef49ff126fff39"
-  integrity sha1-XkdHk/fqmEPRu5nCPu9J/xJv/zk=
-
-indexof@0.0.1:
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-  resolved "https://registry.npm.taobao.org/indexof/download/indexof-0.0.1.tgz#82dc336d232b9062179d05ab3293a66059fd435d"
-  integrity sha1-gtwzbSMrkGIXnQWrMpOmYFn9Q10=
-
-isarray@2.0.1:
-  version "2.0.1"
-  resolved "https://registry.npm.taobao.org/isarray/download/isarray-2.0.1.tgz?cache=0&sync_timestamp=1562592096220&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fisarray%2Fdownload%2Fisarray-2.0.1.tgz#a37d94ed9cda2d59865c9f76fe596ee1f338741e"
-  integrity sha1-o32U7ZzaLVmGXJ92/llu4fM4dB4=
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-  version "1.40.0"
-  resolved "https://registry.npm.taobao.org/mime-db/download/mime-db-1.40.0.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fmime-db%2Fdownload%2Fmime-db-1.40.0.tgz#a65057e998db090f732a68f6c276d387d4126c32"
-  integrity sha1-plBX6ZjbCQ9zKmj2wnbTh9QSbDI=
-
-mime-types@~2.1.24:
-  version "2.1.24"
-  resolved "https://registry.npm.taobao.org/mime-types/download/mime-types-2.1.24.tgz#b6f8d0b3e951efb77dedeca194cff6d16f676f81"
-  integrity sha1-tvjQs+lR77d97eyhlM/20W9nb4E=
-  dependencies:
-    mime-db "1.40.0"
-
-mime@^1.2.9:
-  version "1.6.0"
-  resolved "https://registry.npm.taobao.org/mime/download/mime-1.6.0.tgz?cache=0&sync_timestamp=1560034758817&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fmime%2Fdownload%2Fmime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
-  integrity sha1-Ms2eXGRVO9WNGaVor0Uqz/BJgbE=
-
-minimist@~0.0.1:
-  version "0.0.10"
-  resolved "https://registry.npm.taobao.org/minimist/download/minimist-0.0.10.tgz#de3f98543dbf96082be48ad1a0c7cda836301dcf"
-  integrity sha1-3j+YVD2/lggr5IrRoMfNqDYwHc8=
-
-ms@2.0.0:
-  version "2.0.0"
-  resolved "https://registry.npm.taobao.org/ms/download/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
-  integrity sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=
-
-ms@^2.1.1:
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-  resolved "https://registry.npm.taobao.org/ms/download/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
-  integrity sha1-0J0fNXtEP0kzgqjrPM0YOHKuYAk=
-
-negotiator@0.6.2:
-  version "0.6.2"
-  resolved "https://registry.npm.taobao.org/negotiator/download/negotiator-0.6.2.tgz#feacf7ccf525a77ae9634436a64883ffeca346fb"
-  integrity sha1-/qz3zPUlp3rpY0Q2pkiD/+yjRvs=
-
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-  version "0.7.11"
-  resolved "https://registry.npm.taobao.org/node-static/download/node-static-0.7.11.tgz#60120d349f3cef533e4e820670057eb631882e7f"
-  integrity sha1-YBINNJ8871M+ToIGcAV+tjGILn8=
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-    mime "^1.2.9"
-    optimist ">=0.3.4"
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-  resolved "https://registry.npm.taobao.org/object-component/download/object-component-0.0.3.tgz#f0c69aa50efc95b866c186f400a33769cb2f1291"
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-  resolved "https://registry.npm.taobao.org/parseuri/download/parseuri-0.0.5.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fparseuri%2Fdownload%2Fparseuri-0.0.5.tgz#80204a50d4dbb779bfdc6ebe2778d90e4bce320a"
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-  integrity sha1-KoBeihTWNyEk3ZFZrUUC+MsH8Gs=
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-    socket.io-parser "~3.3.0"
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-socket.io-parser@~3.3.0:
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-socket.io@^2.3.0:
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-  resolved "https://registry.npm.taobao.org/socket.io/download/socket.io-2.3.0.tgz?cache=0&sync_timestamp=1569002852515&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fsocket.io%2Fdownload%2Fsocket.io-2.3.0.tgz#cd762ed6a4faeca59bc1f3e243c0969311eb73fb"
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-
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-  resolved "https://registry.npm.taobao.org/to-array/download/to-array-0.1.4.tgz#17e6c11f73dd4f3d74cda7a4ff3238e9ad9bf890"
-  integrity sha1-F+bBH3PdTz10zaek/zI46a2b+JA=
-
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-  resolved "https://registry.npm.taobao.org/wordwrap/download/wordwrap-0.0.3.tgz#a3d5da6cd5c0bc0008d37234bbaf1bed63059107"
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-  integrity sha1-AI4G2AlDIMNy28L47XagymyKxBk=
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+accepts@~1.3.4:
+  version "1.3.7"
+  resolved "https://registry.npm.taobao.org/accepts/download/accepts-1.3.7.tgz#531bc726517a3b2b41f850021c6cc15eaab507cd"
+  integrity sha1-UxvHJlF6OytB+FACHGzBXqq1B80=
+  dependencies:
+    mime-types "~2.1.24"
+    negotiator "0.6.2"
+
+after@0.8.2:
+  version "0.8.2"
+  resolved "https://registry.npm.taobao.org/after/download/after-0.8.2.tgz#fedb394f9f0e02aa9768e702bda23b505fae7e1f"
+  integrity sha1-/ts5T58OAqqXaOcCvaI7UF+ufh8=
+
+arraybuffer.slice@~0.0.7:
+  version "0.0.7"
+  resolved "https://registry.npm.taobao.org/arraybuffer.slice/download/arraybuffer.slice-0.0.7.tgz#3bbc4275dd584cc1b10809b89d4e8b63a69e7675"
+  integrity sha1-O7xCdd1YTMGxCAm4nU6LY6aednU=
+
+backo2@1.0.2:
+  version "1.0.2"
+  resolved "https://registry.npm.taobao.org/backo2/download/backo2-1.0.2.tgz#31ab1ac8b129363463e35b3ebb69f4dfcfba7947"
+  integrity sha1-MasayLEpNjRj41s+u2n038+6eUc=
+
+base64-arraybuffer@0.1.5:
+  version "0.1.5"
+  resolved "https://registry.npm.taobao.org/base64-arraybuffer/download/base64-arraybuffer-0.1.5.tgz#73926771923b5a19747ad666aa5cd4bf9c6e9ce8"
+  integrity sha1-c5JncZI7Whl0etZmqlzUv5xunOg=
+
+base64id@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.npm.taobao.org/base64id/download/base64id-2.0.0.tgz#2770ac6bc47d312af97a8bf9a634342e0cd25cb6"
+  integrity sha1-J3Csa8R9MSr5eov5pjQ0LgzSXLY=
+
+blob@0.0.5:
+  version "0.0.5"
+  resolved "https://registry.npm.taobao.org/blob/download/blob-0.0.5.tgz#d680eeef25f8cd91ad533f5b01eed48e64caf683"
+  integrity sha1-1oDu7yX4zZGtUz9bAe7UjmTK9oM=
+
+colors@>=0.6.0:
+  version "1.4.0"
+  resolved "https://registry.npm.taobao.org/colors/download/colors-1.4.0.tgz#c50491479d4c1bdaed2c9ced32cf7c7dc2360f78"
+  integrity sha1-xQSRR51MG9rtLJztMs98fcI2D3g=
+
+component-bind@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.npm.taobao.org/component-bind/download/component-bind-1.0.0.tgz#00c608ab7dcd93897c0009651b1d3a8e1e73bbd1"
+  integrity sha1-AMYIq33Nk4l8AAllGx06jh5zu9E=
+
+component-emitter@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.npm.taobao.org/component-emitter/download/component-emitter-1.2.1.tgz#137918d6d78283f7df7a6b7c5a63e140e69425e6"
+  integrity sha1-E3kY1teCg/ffemt8WmPhQOaUJeY=
+
+component-emitter@~1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.3.0.tgz#16e4070fba8ae29b679f2215853ee181ab2eabc0"
+  integrity sha512-Rd3se6QB+sO1TwqZjscQrurpEPIfO0/yYnSin6Q/rD3mOutHvUrCAhJub3r90uNb+SESBuE0QYoB90YdfatsRg==
+
+component-inherit@0.0.3:
+  version "0.0.3"
+  resolved "https://registry.npm.taobao.org/component-inherit/download/component-inherit-0.0.3.tgz#645fc4adf58b72b649d5cae65135619db26ff143"
+  integrity sha1-ZF/ErfWLcrZJ1crmUTVhnbJv8UM=
+
+cookie@~0.4.1:
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.4.1.tgz#afd713fe26ebd21ba95ceb61f9a8116e50a537d1"
+  integrity sha512-ZwrFkGJxUR3EIoXtO+yVE69Eb7KlixbaeAWfBQB9vVsNn/o+Yw69gBWSSDK825hQNdN+wF8zELf3dFNl/kxkUA==
+
+debug@~3.1.0:
+  version "3.1.0"
+  resolved "https://registry.npm.taobao.org/debug/download/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
+  integrity sha1-W7WgZyYotkFJVmuhaBnmFRjGcmE=
+  dependencies:
+    ms "2.0.0"
+
+debug@~4.1.0:
+  version "4.1.1"
+  resolved "https://registry.npm.taobao.org/debug/download/debug-4.1.1.tgz#3b72260255109c6b589cee050f1d516139664791"
+  integrity sha1-O3ImAlUQnGtYnO4FDx1RYTlmR5E=
+  dependencies:
+    ms "^2.1.1"
+
+engine.io-client@~3.5.0:
+  version "3.5.0"
+  resolved "https://registry.yarnpkg.com/engine.io-client/-/engine.io-client-3.5.0.tgz#fc1b4d9616288ce4f2daf06dcf612413dec941c7"
+  integrity sha512-12wPRfMrugVw/DNyJk34GQ5vIVArEcVMXWugQGGuw2XxUSztFNmJggZmv8IZlLyEdnpO1QB9LkcjeWewO2vxtA==
+  dependencies:
+    component-emitter "~1.3.0"
+    component-inherit "0.0.3"
+    debug "~3.1.0"
+    engine.io-parser "~2.2.0"
+    has-cors "1.1.0"
+    indexof "0.0.1"
+    parseqs "0.0.6"
+    parseuri "0.0.6"
+    ws "~7.4.2"
+    xmlhttprequest-ssl "~1.5.4"
+    yeast "0.1.2"
+
+engine.io-parser@~2.2.0:
+  version "2.2.0"
+  resolved "https://registry.npm.taobao.org/engine.io-parser/download/engine.io-parser-2.2.0.tgz?cache=0&sync_timestamp=1568365756037&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fengine.io-parser%2Fdownload%2Fengine.io-parser-2.2.0.tgz#312c4894f57d52a02b420868da7b5c1c84af80ed"
+  integrity sha1-MSxIlPV9UqArQgho2ntcHISvgO0=
+  dependencies:
+    after "0.8.2"
+    arraybuffer.slice "~0.0.7"
+    base64-arraybuffer "0.1.5"
+    blob "0.0.5"
+    has-binary2 "~1.0.2"
+
+engine.io@~3.5.0:
+  version "3.5.0"
+  resolved "https://registry.yarnpkg.com/engine.io/-/engine.io-3.5.0.tgz#9d6b985c8a39b1fe87cd91eb014de0552259821b"
+  integrity sha512-21HlvPUKaitDGE4GXNtQ7PLP0Sz4aWLddMPw2VTyFz1FVZqu/kZsJUO8WNpKuE/OCL7nkfRaOui2ZCJloGznGA==
+  dependencies:
+    accepts "~1.3.4"
+    base64id "2.0.0"
+    cookie "~0.4.1"
+    debug "~4.1.0"
+    engine.io-parser "~2.2.0"
+    ws "~7.4.2"
+
+has-binary2@~1.0.2:
+  version "1.0.3"
+  resolved "https://registry.npm.taobao.org/has-binary2/download/has-binary2-1.0.3.tgz#7776ac627f3ea77250cfc332dab7ddf5e4f5d11d"
+  integrity sha1-d3asYn8+p3JQz8My2rfd9eT10R0=
+  dependencies:
+    isarray "2.0.1"
+
+has-cors@1.1.0:
+  version "1.1.0"
+  resolved "https://registry.npm.taobao.org/has-cors/download/has-cors-1.1.0.tgz#5e474793f7ea9843d1bb99c23eef49ff126fff39"
+  integrity sha1-XkdHk/fqmEPRu5nCPu9J/xJv/zk=
+
+indexof@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.npm.taobao.org/indexof/download/indexof-0.0.1.tgz#82dc336d232b9062179d05ab3293a66059fd435d"
+  integrity sha1-gtwzbSMrkGIXnQWrMpOmYFn9Q10=
+
+isarray@2.0.1:
+  version "2.0.1"
+  resolved "https://registry.npm.taobao.org/isarray/download/isarray-2.0.1.tgz?cache=0&sync_timestamp=1562592096220&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fisarray%2Fdownload%2Fisarray-2.0.1.tgz#a37d94ed9cda2d59865c9f76fe596ee1f338741e"
+  integrity sha1-o32U7ZzaLVmGXJ92/llu4fM4dB4=
+
+mime-db@1.40.0:
+  version "1.40.0"
+  resolved "https://registry.npm.taobao.org/mime-db/download/mime-db-1.40.0.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fmime-db%2Fdownload%2Fmime-db-1.40.0.tgz#a65057e998db090f732a68f6c276d387d4126c32"
+  integrity sha1-plBX6ZjbCQ9zKmj2wnbTh9QSbDI=
+
+mime-types@~2.1.24:
+  version "2.1.24"
+  resolved "https://registry.npm.taobao.org/mime-types/download/mime-types-2.1.24.tgz#b6f8d0b3e951efb77dedeca194cff6d16f676f81"
+  integrity sha1-tvjQs+lR77d97eyhlM/20W9nb4E=
+  dependencies:
+    mime-db "1.40.0"
+
+mime@^1.2.9:
+  version "1.6.0"
+  resolved "https://registry.npm.taobao.org/mime/download/mime-1.6.0.tgz?cache=0&sync_timestamp=1560034758817&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fmime%2Fdownload%2Fmime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
+  integrity sha1-Ms2eXGRVO9WNGaVor0Uqz/BJgbE=
+
+minimist@~0.0.1:
+  version "0.0.10"
+  resolved "https://registry.npm.taobao.org/minimist/download/minimist-0.0.10.tgz#de3f98543dbf96082be48ad1a0c7cda836301dcf"
+  integrity sha1-3j+YVD2/lggr5IrRoMfNqDYwHc8=
+
+ms@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.npm.taobao.org/ms/download/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
+  integrity sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=
+
+ms@^2.1.1:
+  version "2.1.2"
+  resolved "https://registry.npm.taobao.org/ms/download/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
+  integrity sha1-0J0fNXtEP0kzgqjrPM0YOHKuYAk=
+
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+  version "0.6.2"
+  resolved "https://registry.npm.taobao.org/negotiator/download/negotiator-0.6.2.tgz#feacf7ccf525a77ae9634436a64883ffeca346fb"
+  integrity sha1-/qz3zPUlp3rpY0Q2pkiD/+yjRvs=
+
+node-static@^0.7.11:
+  version "0.7.11"
+  resolved "https://registry.npm.taobao.org/node-static/download/node-static-0.7.11.tgz#60120d349f3cef533e4e820670057eb631882e7f"
+  integrity sha1-YBINNJ8871M+ToIGcAV+tjGILn8=
+  dependencies:
+    colors ">=0.6.0"
+    mime "^1.2.9"
+    optimist ">=0.3.4"
+
+optimist@>=0.3.4:
+  version "0.6.1"
+  resolved "https://registry.npm.taobao.org/optimist/download/optimist-0.6.1.tgz#da3ea74686fa21a19a111c326e90eb15a0196686"
+  integrity sha1-2j6nRob6IaGaERwybpDrFaAZZoY=
+  dependencies:
+    minimist "~0.0.1"
+    wordwrap "~0.0.2"
+
+parseqs@0.0.6:
+  version "0.0.6"
+  resolved "https://registry.yarnpkg.com/parseqs/-/parseqs-0.0.6.tgz#8e4bb5a19d1cdc844a08ac974d34e273afa670d5"
+  integrity sha512-jeAGzMDbfSHHA091hr0r31eYfTig+29g3GKKE/PPbEQ65X0lmMwlEoqmhzu0iztID5uJpZsFlUPDP8ThPL7M8w==
+
+parseuri@0.0.6:
+  version "0.0.6"
+  resolved "https://registry.yarnpkg.com/parseuri/-/parseuri-0.0.6.tgz#e1496e829e3ac2ff47f39a4dd044b32823c4a25a"
+  integrity sha512-AUjen8sAkGgao7UyCX6Ahv0gIK2fABKmYjvP4xmy5JaKvcbTRueIqIPHLAfq30xJddqSE033IOMUSOMCcK3Sow==
+
+socket.io-adapter@~1.1.0:
+  version "1.1.1"
+  resolved "https://registry.npm.taobao.org/socket.io-adapter/download/socket.io-adapter-1.1.1.tgz#2a805e8a14d6372124dd9159ad4502f8cb07f06b"
+  integrity sha1-KoBeihTWNyEk3ZFZrUUC+MsH8Gs=
+
+socket.io-client@2.4.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/socket.io-client/-/socket.io-client-2.4.0.tgz#aafb5d594a3c55a34355562fc8aea22ed9119a35"
+  integrity sha512-M6xhnKQHuuZd4Ba9vltCLT9oa+YvTsP8j9NcEiLElfIg8KeYPyhWOes6x4t+LTAC8enQbE/995AdTem2uNyKKQ==
+  dependencies:
+    backo2 "1.0.2"
+    component-bind "1.0.0"
+    component-emitter "~1.3.0"
+    debug "~3.1.0"
+    engine.io-client "~3.5.0"
+    has-binary2 "~1.0.2"
+    indexof "0.0.1"
+    parseqs "0.0.6"
+    parseuri "0.0.6"
+    socket.io-parser "~3.3.0"
+    to-array "0.1.4"
+
+socket.io-parser@~3.3.0:
+  version "3.3.0"
+  resolved "https://registry.npm.taobao.org/socket.io-parser/download/socket.io-parser-3.3.0.tgz#2b52a96a509fdf31440ba40fed6094c7d4f1262f"
+  integrity sha1-K1KpalCf3zFEC6QP7WCUx9TxJi8=
+  dependencies:
+    component-emitter "1.2.1"
+    debug "~3.1.0"
+    isarray "2.0.1"
+
+socket.io-parser@~3.4.0:
+  version "3.4.0"
+  resolved "https://registry.npm.taobao.org/socket.io-parser/download/socket.io-parser-3.4.0.tgz#370bb4a151df2f77ce3345ff55a7072cc6e9565a"
+  integrity sha1-Nwu0oVHfL3fOM0X/VacHLMbpVlo=
+  dependencies:
+    component-emitter "1.2.1"
+    debug "~4.1.0"
+    isarray "2.0.1"
+
+socket.io@^2.3.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/socket.io/-/socket.io-2.4.0.tgz#01030a2727bd8eb2e85ea96d69f03692ee53d47e"
+  integrity sha512-9UPJ1UTvKayuQfVv2IQ3k7tCQC/fboDyIK62i99dAQIyHKaBsNdTpwHLgKJ6guRWxRtC9H+138UwpaGuQO9uWQ==
+  dependencies:
+    debug "~4.1.0"
+    engine.io "~3.5.0"
+    has-binary2 "~1.0.2"
+    socket.io-adapter "~1.1.0"
+    socket.io-client "2.4.0"
+    socket.io-parser "~3.4.0"
+
+to-array@0.1.4:
+  version "0.1.4"
+  resolved "https://registry.npm.taobao.org/to-array/download/to-array-0.1.4.tgz#17e6c11f73dd4f3d74cda7a4ff3238e9ad9bf890"
+  integrity sha1-F+bBH3PdTz10zaek/zI46a2b+JA=
+
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+  version "0.0.3"
+  resolved "https://registry.npm.taobao.org/wordwrap/download/wordwrap-0.0.3.tgz#a3d5da6cd5c0bc0008d37234bbaf1bed63059107"
+  integrity sha1-o9XabNXAvAAI03I0u68b7WMFkQc=
+
+ws@~7.4.2:
+  version "7.4.2"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-7.4.2.tgz#782100048e54eb36fe9843363ab1c68672b261dd"
+  integrity sha512-T4tewALS3+qsrpGI/8dqNMLIVdq/g/85U98HPMa6F0m6xTbvhXU6RCQLqPH3+SlomNV/LdY6RXEbBpMH6EOJnA==
+
+xmlhttprequest-ssl@~1.5.4:
+  version "1.5.5"
+  resolved "https://registry.npm.taobao.org/xmlhttprequest-ssl/download/xmlhttprequest-ssl-1.5.5.tgz#c2876b06168aadc40e57d97e81191ac8f4398b3e"
+  integrity sha1-wodrBhaKrcQOV9l+gRkayPQ5iz4=
+
+yeast@0.1.2:
+  version "0.1.2"
+  resolved "https://registry.npm.taobao.org/yeast/download/yeast-0.1.2.tgz#008e06d8094320c372dbc2f8ed76a0ca6c8ac419"
+  integrity sha1-AI4G2AlDIMNy28L47XagymyKxBk=