chore(deps): bump rollup-plugin-buble from 0.19.2 to 0.19.4

Bumps [rollup-plugin-buble](https://github.com/rollup/rollup-plugin-buble) from 0.19.2 to 0.19.4.
- [Release notes](https://github.com/rollup/rollup-plugin-buble/releases)
- [Changelog](https://github.com/rollup/rollup-plugin-buble/blob/master/CHANGELOG.md)
- [Commits](rollup/rollup-plugin-buble@v0.19.2...0.19.4)

Signed-off-by: dependabot[bot] <support@dependabot.com>

yarn.lock

@@ -222,26 +222,19 @@ abstract-leveldown@~0.12.0, abstract-leveldown@~0.12.1:
   dependencies:
     xtend "~3.0.0"
 
-acorn-dynamic-import@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/acorn-dynamic-import/-/acorn-dynamic-import-3.0.0.tgz#901ceee4c7faaef7e07ad2a47e890675da50a278"
-  integrity sha512-zVWV8Z8lislJoOKKqdNMOB+s6+XV5WERty8MnKBeFgwA+19XJjJHs2RP5dzM57FftIs+jQnRToLiWazKr6sSWg==
-  dependencies:
-    acorn "^5.0.0"
-
 acorn-jsx@^4.1.1:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/acorn-jsx/-/acorn-jsx-4.1.1.tgz#e8e41e48ea2fe0c896740610ab6a4ffd8add225e"
   integrity sha512-JY+iV6r+cO21KtntVvFkD+iqjtdpRUpGqKWgfkCdZq1R+kbreEl8EcdcJR4SmiIgsIQT33s6QzheQ9a275Q8xw==
   dependencies:
     acorn "^5.0.3"
 
-acorn@5.X, acorn@^5.0.0, acorn@^5.0.3:
+acorn@5.X, acorn@^5.0.3:
   version "5.7.1"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.1.tgz#f095829297706a7c9776958c0afc8930a9b9d9d8"
   integrity sha512-d+nbxBUGKg7Arpsvbnlq61mc12ek3EY8EQldM3GPAhWJ1UVxC6TDGbIvUMNU6obBX3i1+ptCIzV4vq0gFPEGVQ==
 
-acorn@^5.4.1, acorn@^5.6.0:
+acorn@^5.6.0:
   version "5.7.2"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.2.tgz#91fa871883485d06708800318404e72bfb26dcc5"
   integrity sha512-cJrKCNcr2kv8dlDnbw+JPUGjHZzo4myaxOLmpOX8a+rgX94YeTcTMv/LFJUSByRpc+i4GgVnnhLxvMu/2Y+rqw==
@@ -922,18 +915,16 @@ browserslist@^4.1.0:
     electron-to-chromium "^1.3.62"
     node-releases "^1.0.0-alpha.11"
 
-buble@^0.19.2:
-  version "0.19.3"
-  resolved "https://registry.yarnpkg.com/buble/-/buble-0.19.3.tgz#01e9412062cff1da6f20342b6ecd72e7bf699d02"
-  integrity sha512-3B0Lcy2u6x6km0BqTz/FS3UnrOJlnIlBWsyjvtqzdtmWkqiS0+Sg4hc6L9Mmm63hZKTACpYS9vUeIoKSi1vcrQ==
+buble@^0.19.4:
+  version "0.19.6"
+  resolved "https://registry.yarnpkg.com/buble/-/buble-0.19.6.tgz#915909b6bd5b11ee03b1c885ec914a8b974d34d3"
+  integrity sha512-9kViM6nJA1Q548Jrd06x0geh+BG2ru2+RMDkIHHgJY/8AcyCs34lTHwra9BX7YdPrZXd5aarkpr/SY8bmPgPdg==
   dependencies:
-    acorn "^5.4.1"
-    acorn-dynamic-import "^3.0.0"
-    acorn-jsx "^4.1.1"
-    chalk "^2.3.1"
-    magic-string "^0.22.4"
+    chalk "^2.4.1"
+    magic-string "^0.25.1"
     minimist "^1.2.0"
     os-homedir "^1.0.1"
+    regexpu-core "^4.2.0"
     vlq "^1.0.0"
 
 buffer-alloc-unsafe@^1.1.0:
@@ -5074,6 +5065,13 @@ magic-string@^0.22.4, magic-string@^0.22.5:
   dependencies:
     vlq "^0.2.2"
 
+magic-string@^0.25.1:
+  version "0.25.1"
+  resolved "https://registry.yarnpkg.com/magic-string/-/magic-string-0.25.1.tgz#b1c248b399cd7485da0fe7385c2fc7011843266e"
+  integrity sha512-sCuTz6pYom8Rlt4ISPFn6wuFodbKMIHUMv4Qko9P17dpxb7s52KJTmRuZZqHdGmLCK9AOcDare039nRIcfdkEg==
+  dependencies:
+    sourcemap-codec "^1.4.1"
+
 make-dir@^1.0.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/make-dir/-/make-dir-1.3.0.tgz#79c1033b80515bd6d24ec9933e860ca75ee27f0c"
@@ -6852,7 +6850,14 @@ reduce-css-calc@^2.0.0:
     css-unit-converter "^1.1.1"
     postcss-value-parser "^3.3.0"
 
-regenerate@^1.2.1:
+regenerate-unicode-properties@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/regenerate-unicode-properties/-/regenerate-unicode-properties-7.0.0.tgz#107405afcc4a190ec5ed450ecaa00ed0cafa7a4c"
+  integrity sha512-s5NGghCE4itSlUS+0WUj88G6cfMVMmH8boTPNvABf8od+2dhT9WDlWu8n01raQAJZMOK8Ch6jSexaRO7swd6aw==
+  dependencies:
+    regenerate "^1.4.0"
+
+regenerate@^1.2.1, regenerate@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/regenerate/-/regenerate-1.4.0.tgz#4a856ec4b56e4077c557589cae85e7a4c8869a11"
   integrity sha512-1G6jJVDWrt0rK99kBjvEtziZNCICAuvIPkSiUFIQxVP06RCVpq3dmDo2oi6ABpYaDYaTRr67BEhL8r1wgEZZKg==
@@ -6891,18 +6896,42 @@ regexpu-core@^1.0.0:
     regjsgen "^0.2.0"
     regjsparser "^0.1.4"
 
+regexpu-core@^4.2.0:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/regexpu-core/-/regexpu-core-4.2.0.tgz#a3744fa03806cffe146dea4421a3e73bdcc47b1d"
+  integrity sha512-Z835VSnJJ46CNBttalHD/dB+Sj2ezmY6Xp38npwU87peK6mqOzOpV8eYktdkLTEkzzD+JsTcxd84ozd8I14+rw==
+  dependencies:
+    regenerate "^1.4.0"
+    regenerate-unicode-properties "^7.0.0"
+    regjsgen "^0.4.0"
+    regjsparser "^0.3.0"
+    unicode-match-property-ecmascript "^1.0.4"
+    unicode-match-property-value-ecmascript "^1.0.2"
+
 regjsgen@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/regjsgen/-/regjsgen-0.2.0.tgz#6c016adeac554f75823fe37ac05b92d5a4edb1f7"
   integrity sha1-bAFq3qxVT3WCP+N6wFuS1aTtsfc=
 
+regjsgen@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/regjsgen/-/regjsgen-0.4.0.tgz#c1eb4c89a209263f8717c782591523913ede2561"
+  integrity sha512-X51Lte1gCYUdlwhF28+2YMO0U6WeN0GLpgpA7LK7mbdDnkQYiwvEpmpe0F/cv5L14EbxgrdayAG3JETBv0dbXA==
+
 regjsparser@^0.1.4:
   version "0.1.5"
   resolved "https://registry.yarnpkg.com/regjsparser/-/regjsparser-0.1.5.tgz#7ee8f84dc6fa792d3fd0ae228d24bd949ead205c"
   integrity sha1-fuj4Tcb6eS0/0K4ijSS9lJ6tIFw=
   dependencies:
     jsesc "~0.5.0"
 
+regjsparser@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/regjsparser/-/regjsparser-0.3.0.tgz#3c326da7fcfd69fa0d332575a41c8c0cdf588c96"
+  integrity sha512-zza72oZBBHzt64G7DxdqrOo/30bhHkwMUoT0WqfGu98XLd7N+1tsy5MJ96Bk4MD0y74n629RhmrGW6XlnLLwCA==
+  dependencies:
+    jsesc "~0.5.0"
+
 remark-parse@^5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/remark-parse/-/remark-parse-5.0.0.tgz#4c077f9e499044d1d5c13f80d7a98cf7b9285d95"
@@ -7167,12 +7196,12 @@ ripemd160@^2.0.0, ripemd160@^2.0.1:
     inherits "^2.0.1"
 
 rollup-plugin-buble@^0.19.2:
-  version "0.19.2"
-  resolved "https://registry.yarnpkg.com/rollup-plugin-buble/-/rollup-plugin-buble-0.19.2.tgz#c0590c7d3d475b5ed59f129764ec93710cc6e8dd"
-  integrity sha512-dxK0prR8j/7qhI2EZDz/evKCRuhuZMpRlUGPrRWmpg5/2V8tP1XFW+Uk0WfxyNgFfJHvy0GmxnJSTb5dIaNljQ==
+  version "0.19.4"
+  resolved "https://registry.yarnpkg.com/rollup-plugin-buble/-/rollup-plugin-buble-0.19.4.tgz#b0dde11ad2736b68e94ba2aa34de7822c6e28d24"
+  integrity sha512-mahvTRn9mUVKEUyA5QbrfdybOH7tipHRe4zkKZjEGMB3YSaLW95kHFSB4Vdt7BofyG9r7zMCCmAsEqZKkRaN6A==
   dependencies:
-    buble "^0.19.2"
-    rollup-pluginutils "^2.0.1"
+    buble "^0.19.4"
+    rollup-pluginutils "^2.3.3"
 
 rollup-plugin-commonjs@^9.1.6:
   version "9.1.6"
@@ -7275,6 +7304,14 @@ rollup-pluginutils@^2.0.1, rollup-pluginutils@^2.2.0, rollup-pluginutils@^2.3.1:
     estree-walker "^0.5.2"
     micromatch "^2.3.11"
 
+rollup-pluginutils@^2.3.3:
+  version "2.3.3"
+  resolved "https://registry.yarnpkg.com/rollup-pluginutils/-/rollup-pluginutils-2.3.3.tgz#3aad9b1eb3e7fe8262820818840bf091e5ae6794"
+  integrity sha512-2XZwja7b6P5q4RZ5FhyX1+f46xi1Z3qBKigLRZ6VTZjwbN0K1IFGMlwm06Uu0Emcre2Z63l77nq/pzn+KxIEoA==
+  dependencies:
+    estree-walker "^0.5.2"
+    micromatch "^2.3.11"
+
 rollup@^0.65.0:
   version "0.65.0"
   resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.65.0.tgz#280db1252169b68fc3043028346b337dde453fba"
@@ -7540,6 +7577,11 @@ source-map@^0.5.0, source-map@^0.5.1, source-map@^0.5.3, source-map@^0.5.6:
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
   integrity sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=
 
+sourcemap-codec@^1.4.1:
+  version "1.4.3"
+  resolved "https://registry.yarnpkg.com/sourcemap-codec/-/sourcemap-codec-1.4.3.tgz#0ba615b73ec35112f63c2f2d9e7c3f87282b0e33"
+  integrity sha512-vFrY/x/NdsD7Yc8mpTJXuao9S8lq08Z/kOITHz6b7YbfI9xL8Spe5EvSQUHOI7SbpY8bRPr0U3kKSsPuqEGSfA==
+
 sparkles@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/sparkles/-/sparkles-1.0.1.tgz#008db65edce6c50eec0c5e228e1945061dd0437c"
@@ -8344,6 +8386,29 @@ unherit@^1.0.4:
     inherits "^2.0.1"
     xtend "^4.0.1"
 
+unicode-canonical-property-names-ecmascript@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/unicode-canonical-property-names-ecmascript/-/unicode-canonical-property-names-ecmascript-1.0.4.tgz#2619800c4c825800efdd8343af7dd9933cbe2818"
+  integrity sha512-jDrNnXWHd4oHiTZnx/ZG7gtUTVp+gCcTTKr8L0HjlwphROEW3+Him+IpvC+xcJEFegapiMZyZe02CyuOnRmbnQ==
+
+unicode-match-property-ecmascript@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/unicode-match-property-ecmascript/-/unicode-match-property-ecmascript-1.0.4.tgz#8ed2a32569961bce9227d09cd3ffbb8fed5f020c"
+  integrity sha512-L4Qoh15vTfntsn4P1zqnHulG0LdXgjSO035fEpdtp6YxXhMT51Q6vgM5lYdG/5X3MjS+k/Y9Xw4SFCY9IkR0rg==
+  dependencies:
+    unicode-canonical-property-names-ecmascript "^1.0.4"
+    unicode-property-aliases-ecmascript "^1.0.4"
+
+unicode-match-property-value-ecmascript@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/unicode-match-property-value-ecmascript/-/unicode-match-property-value-ecmascript-1.0.2.tgz#9f1dc76926d6ccf452310564fd834ace059663d4"
+  integrity sha512-Rx7yODZC1L/T8XKo/2kNzVAQaRE88AaMvI1EF/Xnj3GW2wzN6fop9DDWuFAKUVFH7vozkz26DzP0qyWLKLIVPQ==
+
+unicode-property-aliases-ecmascript@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/unicode-property-aliases-ecmascript/-/unicode-property-aliases-ecmascript-1.0.4.tgz#5a533f31b4317ea76f17d807fa0d116546111dd0"
+  integrity sha512-2WSLa6OdYd2ng8oqiGIWnJqyFArvhn+5vgx5GTxMbUYjCYKUcuKS62YLFF0R/BDGlB1yzXjQOLtPAfHsgirEpg==
+
 unified@^6.0.0:
   version "6.2.0"
   resolved "https://registry.yarnpkg.com/unified/-/unified-6.2.0.tgz#7fbd630f719126d67d40c644b7e3f617035f6dba"