diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
new file mode 100644
index 00000000..16d2479a
--- /dev/null
+++ b/.github/workflows/continuous-integration.yml
@@ -0,0 +1,46 @@
+# Based on https://github.com/actions/starter-workflows/blob/master/ci/node.js.yml
+
+name: Build and Test
+
+on:
+  push
+
+jobs:
+  ci:
+    runs-on: ${{ matrix.operating-system }}
+
+    strategy:
+      matrix:
+        operating-system: [ubuntu-latest, macos-latest, windows-latest]
+        node-version: [6.x, 8.x, 10.x, 12.x, 14.x]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+
+    # Puppeteer runs an install script that requires Node 10+.
+    # Also, the `npm ci` command doesn’t exist on the version of npm that shipped with Node 6.
+    - run: node --eval "pjson = JSON.parse(require('fs').readFileSync('./package.json')); delete pjson.devDependencies.puppeteer; require('fs').writeFileSync('./package.json', JSON.stringify(pjson), 'utf8')"
+      if: matrix.node-version == '6.x' || matrix.node-version == '8.x'
+    - run: npm install
+      if: matrix.node-version == '6.x'
+    - run: npm ci
+      if: matrix.node-version != '6.x'
+
+    - run: node ./bin/cake test
+    - run: node --harmony ./bin/cake test
+
+    - run: node ./bin/cake test:browser
+      if: matrix.node-version != '6.x' && matrix.node-version != '8.x'
+    
+    - run: node ./bin/cake test:browser:node
+
+    - run: node ./bin/cake test:integrations
+    
+    - run: node ./bin/cake build:except-parser
+    - run: node ./bin/cake build:parser
+    - run: node ./bin/cake build:full
+    - run: node ./bin/cake build:browser
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 75f07409..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-language: node_js
-
-node_js:
-  - 6
-  - 8
-  - 10
-  - 12
-  - node # Latest
-
-cache:
-  directories:
-    - node_modules
-
-script:
-  - node ./bin/cake test
-  - node --harmony ./bin/cake test
-  - node ./bin/cake test:browser
-  - node ./bin/cake test:integrations
-  - node ./bin/cake build:except-parser
-  - node ./bin/cake build:parser
-  - node ./bin/cake build:full
-  - node ./bin/cake build:browser
diff --git a/Cakefile b/Cakefile
index fe8f5d63..f68f8751 100644
--- a/Cakefile
+++ b/Cakefile
@@ -368,11 +368,13 @@ task 'release', 'build and test the CoffeeScript source, and build the documenta
   execSync '''
     cake build:full
     cake build:browser
+    cake doc:test
+    cake test:browser:node
     cake test:browser
     cake test:integrations
     cake doc:site
-    cake doc:test
-    cake doc:source''', stdio: 'inherit'
+    cake doc:source
+  ''', stdio: 'inherit'
 
 
 task 'bench', 'quick benchmark of compilation time', ->
@@ -495,7 +497,65 @@ task 'test', 'run the CoffeeScript language test suite', ->
   runTests(CoffeeScript).catch -> process.exit 1
 
 
-task 'test:browser', 'run the test suite against the merged browser script', ->
+task 'test:browser', 'run the test suite against the modern browser compiler in a headless browser', ->
+  # This test uses Puppeteer to launch headless Chrome to test the ES module
+  # version of the browser compiler. There’s no reason to run this test in old
+  # versions of Node (the runtime is the headless Chrome browser, not Node),
+  # and Puppeteer 3 only supports Node >= 10.18.1, so limit this test to those
+  # versions. The code below uses `Promise.prototype.finally` because the 
+  # CoffeeScript codebase currently maintains compatibility with Node 6, which
+  # did not support `async`/`await` syntax. Even though this test doesn’t run
+  # in Node 6, it needs to still _parse_ in Node 6 so that this file can load.
+  [major, minor, build] = process.versions.node.split('.').map (n) -> parseInt(n, 10)
+  return if major < 10 or (major is 10 and minor < 18) or (major is 10 and minor is 18 and build < 1)
+
+  # Create very simple web server to serve the two files we need.
+  http = require 'http'
+  serveFile = (res, fileToServe, mimeType) ->
+    res.statusCode = 200
+    res.setHeader 'Content-Type', mimeType
+    fs.createReadStream(fileToServe).pipe res
+  server = http.createServer (req, res) ->
+    if req.url is '/'
+      serveFile res, path.join(__dirname, 'docs', "v#{majorVersion}", 'test.html'), 'text/html'
+    else if req.url is '/browser-compiler-modern/coffeescript.js'
+      # The `text/javascript` MIME type is required for an ES module file to be
+      # loaded in a browser.
+      serveFile res, path.join(__dirname, 'docs', "v#{majorVersion}", 'browser-compiler-modern', 'coffeescript.js'), 'text/javascript'
+    else
+      res.statusCode = 404
+      res.end()
+  server.listen 8080
+
+  puppeteer = require 'puppeteer'
+  browser = page = result = null
+  puppeteer.launch()
+  .then((browserHandle) ->
+    browser = browserHandle
+    browser.newPage()
+  ).then((pageHandle) ->
+    page = pageHandle
+    page.goto 'http://localhost:8080/'
+  ).then(->
+    page.waitFor '#result',
+      visible: yes
+      polling: 'mutation'
+  ).then((element) ->
+    page.evaluate ((el) => el.textContent), element
+  ).then((elementText) ->
+    result = elementText
+  ).finally(->
+    browser.close()
+  ).finally ->
+    server.close()
+    if result and 'failed' not in result
+      log result, green
+    else
+      log result, red
+      process.exit 1
+
+
+task 'test:browser:node', 'run the test suite against the legacy browser compiler in Node', ->
   source = fs.readFileSync "lib/coffeescript-browser-compiler-legacy/coffeescript.js", 'utf-8'
   result = {}
   global.testingBrowser = yes
diff --git a/appveyor.yml b/appveyor.yml
deleted file mode 100644
index 9dcf7abd..00000000
--- a/appveyor.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-environment:
-  matrix:
-    - nodejs_version: '6'
-    - nodejs_version: '8'
-    - nodejs_version: '10'
-    - nodejs_version: '12'
-    - nodejs_version: '' # Latest
-
-install:
-  - ps: Install-Product node $env:nodejs_version
-  - node --version
-  - npm --version
-  - npm install
-
-cache:
-  - node_modules
-
-test_script:
-  - node ./bin/cake test
-  - node --harmony ./bin/cake test
-  - node ./bin/cake test:browser
-  - node ./bin/cake test:integrations
-  - node ./bin/cake build:except-parser
-  - node ./bin/cake build:parser
-  - node ./bin/cake build:full
-  - node ./bin/cake build:browser
-
-build: off
-
-version: "{build}"
diff --git a/docs/v2/test.html b/docs/v2/test.html
index ab0500ba..bdc09a2c 100644
--- a/docs/v2/test.html
+++ b/docs/v2/test.html
@@ -50,9 +50,10 @@ start = new Date
 @currentFile = ''
 @passedTests = failedTests = total = done = 0
 
-say = (msg, className) ->
+say = (msg, className, id) ->
   div = document.createElement 'div'
   div.className = className if className?
+  div.id = id if id?
   div.appendChild document.createTextNode msg
   stdout.appendChild div
   msg
@@ -219,7 +220,7 @@ done = ->
   sec = (new Date - start) / 1000
   msg = "passed #{passedTests} tests in #{sec.toFixed 2} seconds"
   msg = "failed #{total - passedTests} tests and #{msg}" unless yay
-  say msg, (if yay then 'good' else 'bad')
+  say msg, (if yay then 'good' else 'bad'), 'result'
 
   gtag 'event', 'tests_complete',
     event_category: 'tests'
diff --git a/documentation/site/test.html b/documentation/site/test.html
index 36a6c1ed..27f85882 100644
--- a/documentation/site/test.html
+++ b/documentation/site/test.html
@@ -50,9 +50,10 @@ start = new Date
 @currentFile = ''
 @passedTests = failedTests = total = done = 0
 
-say = (msg, className) ->
+say = (msg, className, id) ->
   div = document.createElement 'div'
   div.className = className if className?
+  div.id = id if id?
   div.appendChild document.createTextNode msg
   stdout.appendChild div
   msg
@@ -137,7 +138,7 @@ done = ->
   sec = (new Date - start) / 1000
   msg = "passed #{passedTests} tests in #{sec.toFixed 2} seconds"
   msg = "failed #{total - passedTests} tests and #{msg}" unless yay
-  say msg, (if yay then 'good' else 'bad')
+  say msg, (if yay then 'good' else 'bad'), 'result'
 
   gtag 'event', 'tests_complete',
     event_category: 'tests'
diff --git a/package-lock.json b/package-lock.json
index 16f503c4..fe22eb65 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -36,12 +36,12 @@
       }
     },
     "@babel/generator": {
-      "version": "7.8.7",
-      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.8.7.tgz",
-      "integrity": "sha512-DQwjiKJqH4C3qGiyQCAExJHoZssn49JTMJgZ8SANGgVFdkupcUhLOdkAeoC6kmHZCPfoDG5M0b6cFlSN5wW7Ew==",
+      "version": "7.8.4",
+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.8.4.tgz",
+      "integrity": "sha512-PwhclGdRpNAf3IxZb0YVuITPZmmrXz9zf6fH8lT4XbrmfQKr6ryBzhv593P5C6poJRciFCL/eHGW2NuGrgEyxA==",
       "dev": true,
       "requires": {
-        "@babel/types": "^7.8.7",
+        "@babel/types": "^7.8.3",
         "jsesc": "^2.5.1",
         "lodash": "^4.17.13",
         "source-map": "^0.5.0"
@@ -67,23 +67,22 @@
       }
     },
     "@babel/helper-call-delegate": {
-      "version": "7.8.7",
-      "resolved": "https://registry.npmjs.org/@babel/helper-call-delegate/-/helper-call-delegate-7.8.7.tgz",
-      "integrity": "sha512-doAA5LAKhsFCR0LAFIf+r2RSMmC+m8f/oQ+URnUET/rWeEzC0yTRmAGyWkD4sSu3xwbS7MYQ2u+xlt1V5R56KQ==",
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-call-delegate/-/helper-call-delegate-7.8.3.tgz",
+      "integrity": "sha512-6Q05px0Eb+N4/GTyKPPvnkig7Lylw+QzihMpws9iiZQv7ZImf84ZsZpQH7QoWN4n4tm81SnSzPgHw2qtO0Zf3A==",
       "dev": true,
       "requires": {
         "@babel/helper-hoist-variables": "^7.8.3",
         "@babel/traverse": "^7.8.3",
-        "@babel/types": "^7.8.7"
+        "@babel/types": "^7.8.3"
       }
     },
     "@babel/helper-create-regexp-features-plugin": {
-      "version": "7.8.6",
-      "resolved": "https://registry.npmjs.org/@babel/helper-create-regexp-features-plugin/-/helper-create-regexp-features-plugin-7.8.6.tgz",
-      "integrity": "sha512-bPyujWfsHhV/ztUkwGHz/RPV1T1TDEsSZDsN42JPehndA+p1KKTh3npvTadux0ZhCrytx9tvjpWNowKby3tM6A==",
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-create-regexp-features-plugin/-/helper-create-regexp-features-plugin-7.8.3.tgz",
+      "integrity": "sha512-Gcsm1OHCUr9o9TcJln57xhWHtdXbA2pgQ58S0Lxlks0WMGNXuki4+GLfX0p+L2ZkINUGZvfkz8rzoqJQSthI+Q==",
       "dev": true,
       "requires": {
-        "@babel/helper-annotate-as-pure": "^7.8.3",
         "@babel/helper-regex": "^7.8.3",
         "regexpu-core": "^4.6.0"
       }
@@ -157,17 +156,16 @@
       }
     },
     "@babel/helper-module-transforms": {
-      "version": "7.8.6",
-      "resolved": "https://registry.npmjs.org/@babel/helper-module-transforms/-/helper-module-transforms-7.8.6.tgz",
-      "integrity": "sha512-RDnGJSR5EFBJjG3deY0NiL0K9TO8SXxS9n/MPsbPK/s9LbQymuLNtlzvDiNS7IpecuL45cMeLVkA+HfmlrnkRg==",
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-module-transforms/-/helper-module-transforms-7.8.3.tgz",
+      "integrity": "sha512-C7NG6B7vfBa/pwCOshpMbOYUmrYQDfCpVL/JCRu0ek8B5p8kue1+BCXpg2vOYs7w5ACB9GTOBYQ5U6NwrMg+3Q==",
       "dev": true,
       "requires": {
         "@babel/helper-module-imports": "^7.8.3",
-        "@babel/helper-replace-supers": "^7.8.6",
         "@babel/helper-simple-access": "^7.8.3",
         "@babel/helper-split-export-declaration": "^7.8.3",
-        "@babel/template": "^7.8.6",
-        "@babel/types": "^7.8.6",
+        "@babel/template": "^7.8.3",
+        "@babel/types": "^7.8.3",
         "lodash": "^4.17.13"
       }
     },
@@ -209,15 +207,15 @@
       }
     },
     "@babel/helper-replace-supers": {
-      "version": "7.8.6",
-      "resolved": "https://registry.npmjs.org/@babel/helper-replace-supers/-/helper-replace-supers-7.8.6.tgz",
-      "integrity": "sha512-PeMArdA4Sv/Wf4zXwBKPqVj7n9UF/xg6slNRtZW84FM7JpE1CbG8B612FyM4cxrf4fMAMGO0kR7voy1ForHHFA==",
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-replace-supers/-/helper-replace-supers-7.8.3.tgz",
+      "integrity": "sha512-xOUssL6ho41U81etpLoT2RTdvdus4VfHamCuAm4AHxGr+0it5fnwoVdwUJ7GFEqCsQYzJUhcbsN9wB9apcYKFA==",
       "dev": true,
       "requires": {
         "@babel/helper-member-expression-to-functions": "^7.8.3",
         "@babel/helper-optimise-call-expression": "^7.8.3",
-        "@babel/traverse": "^7.8.6",
-        "@babel/types": "^7.8.6"
+        "@babel/traverse": "^7.8.3",
+        "@babel/types": "^7.8.3"
       }
     },
     "@babel/helper-simple-access": {
@@ -274,9 +272,9 @@
       }
     },
     "@babel/parser": {
-      "version": "7.8.7",
-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.8.7.tgz",
-      "integrity": "sha512-9JWls8WilDXFGxs0phaXAZgpxTZhSk/yOYH2hTHC0X1yC7Z78IJfvR1vJ+rmJKq3I35td2XzXzN6ZLYlna+r/A==",
+      "version": "7.8.4",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.8.4.tgz",
+      "integrity": "sha512-0fKu/QqildpXmPVaRBoXOlyBb3MC+J0A66x97qEfLOMkn3u6nfY5esWogQwi/K0BjASYy4DbnsEWnpNL6qT5Mw==",
       "dev": true
     },
     "@babel/plugin-proposal-async-generator-functions": {
@@ -434,9 +432,9 @@
       }
     },
     "@babel/plugin-transform-classes": {
-      "version": "7.8.6",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-classes/-/plugin-transform-classes-7.8.6.tgz",
-      "integrity": "sha512-k9r8qRay/R6v5aWZkrEclEhKO6mc1CCQr2dLsVHBmOQiMpN6I2bpjX3vgnldUWeEI1GHVNByULVxZ4BdP4Hmdg==",
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-classes/-/plugin-transform-classes-7.8.3.tgz",
+      "integrity": "sha512-SjT0cwFJ+7Rbr1vQsvphAHwUHvSUPmMjMU/0P59G8U2HLFqSa082JO7zkbDNWs9kH/IUqpHI6xWNesGf8haF1w==",
       "dev": true,
       "requires": {
         "@babel/helper-annotate-as-pure": "^7.8.3",
@@ -444,7 +442,7 @@
         "@babel/helper-function-name": "^7.8.3",
         "@babel/helper-optimise-call-expression": "^7.8.3",
         "@babel/helper-plugin-utils": "^7.8.3",
-        "@babel/helper-replace-supers": "^7.8.6",
+        "@babel/helper-replace-supers": "^7.8.3",
         "@babel/helper-split-export-declaration": "^7.8.3",
         "globals": "^11.1.0"
       }
@@ -497,9 +495,9 @@
       }
     },
     "@babel/plugin-transform-for-of": {
-      "version": "7.8.6",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-for-of/-/plugin-transform-for-of-7.8.6.tgz",
-      "integrity": "sha512-M0pw4/1/KI5WAxPsdcUL/w2LJ7o89YHN3yLkzNjg7Yl15GlVGgzHyCU+FMeAxevHGsLVmUqbirlUIKTafPmzdw==",
+      "version": "7.8.4",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-for-of/-/plugin-transform-for-of-7.8.4.tgz",
+      "integrity": "sha512-iAXNlOWvcYUYoV8YIxwS7TxGRJcxyl8eQCfT+A5j8sKUzRFvJdcyjp97jL2IghWSRDaL2PU2O2tX8Cu9dTBq5A==",
       "dev": true,
       "requires": {
         "@babel/helper-plugin-utils": "^7.8.3"
@@ -607,12 +605,12 @@
       }
     },
     "@babel/plugin-transform-parameters": {
-      "version": "7.8.7",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-parameters/-/plugin-transform-parameters-7.8.7.tgz",
-      "integrity": "sha512-brYWaEPTRimOctz2NDA3jnBbDi7SVN2T4wYuu0aqSzxC3nozFZngGaw29CJ9ZPweB7k+iFmZuoG3IVPIcXmD2g==",
+      "version": "7.8.4",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-parameters/-/plugin-transform-parameters-7.8.4.tgz",
+      "integrity": "sha512-IsS3oTxeTsZlE5KqzTbcC2sV0P9pXdec53SU+Yxv7o/6dvGM5AkTotQKhoSffhNgZ/dftsSiOoxy7evCYJXzVA==",
       "dev": true,
       "requires": {
-        "@babel/helper-call-delegate": "^7.8.7",
+        "@babel/helper-call-delegate": "^7.8.3",
         "@babel/helper-get-function-arity": "^7.8.3",
         "@babel/helper-plugin-utils": "^7.8.3"
       }
@@ -627,12 +625,12 @@
       }
     },
     "@babel/plugin-transform-regenerator": {
-      "version": "7.8.7",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-regenerator/-/plugin-transform-regenerator-7.8.7.tgz",
-      "integrity": "sha512-TIg+gAl4Z0a3WmD3mbYSk+J9ZUH6n/Yc57rtKRnlA/7rcCvpekHXe0CMZHP1gYp7/KLe9GHTuIba0vXmls6drA==",
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-regenerator/-/plugin-transform-regenerator-7.8.3.tgz",
+      "integrity": "sha512-qt/kcur/FxrQrzFR432FGZznkVAjiyFtCOANjkAKwCbt465L6ZCiUQh2oMYGU3Wo8LRFJxNDFwWn106S5wVUNA==",
       "dev": true,
       "requires": {
-        "regenerator-transform": "^0.14.2"
+        "regenerator-transform": "^0.14.0"
       }
     },
     "@babel/plugin-transform-reserved-words": {
@@ -760,47 +758,38 @@
         "semver": "^5.5.0"
       }
     },
-    "@babel/runtime": {
-      "version": "7.8.7",
-      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.8.7.tgz",
-      "integrity": "sha512-+AATMUFppJDw6aiR5NVPHqIQBlV/Pj8wY/EZH+lmvRdUo9xBaz/rF3alAwFJQavvKfeOlPE7oaaDHVbcySbCsg==",
-      "dev": true,
-      "requires": {
-        "regenerator-runtime": "^0.13.4"
-      }
-    },
     "@babel/template": {
-      "version": "7.8.6",
-      "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.8.6.tgz",
-      "integrity": "sha512-zbMsPMy/v0PWFZEhQJ66bqjhH+z0JgMoBWuikXybgG3Gkd/3t5oQ1Rw2WQhnSrsOmsKXnZOx15tkC4qON/+JPg==",
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.8.3.tgz",
+      "integrity": "sha512-04m87AcQgAFdvuoyiQ2kgELr2tV8B4fP/xJAVUL3Yb3bkNdMedD3d0rlSQr3PegP0cms3eHjl1F7PWlvWbU8FQ==",
       "dev": true,
       "requires": {
         "@babel/code-frame": "^7.8.3",
-        "@babel/parser": "^7.8.6",
-        "@babel/types": "^7.8.6"
+        "@babel/parser": "^7.8.3",
+        "@babel/types": "^7.8.3"
       }
     },
     "@babel/traverse": {
-      "version": "7.8.6",
-      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.8.6.tgz",
-      "integrity": "sha512-2B8l0db/DPi8iinITKuo7cbPznLCEk0kCxDoB9/N6gGNg/gxOXiR/IcymAFPiBwk5w6TtQ27w4wpElgp9btR9A==",
+      "version": "7.8.4",
+      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.8.4.tgz",
+      "integrity": "sha512-NGLJPZwnVEyBPLI+bl9y9aSnxMhsKz42so7ApAv9D+b4vAFPpY013FTS9LdKxcABoIYFU52HcYga1pPlx454mg==",
       "dev": true,
       "requires": {
         "@babel/code-frame": "^7.8.3",
-        "@babel/generator": "^7.8.6",
+        "@babel/generator": "^7.8.4",
         "@babel/helper-function-name": "^7.8.3",
         "@babel/helper-split-export-declaration": "^7.8.3",
-        "@babel/parser": "^7.8.6",
-        "@babel/types": "^7.8.6",
+        "@babel/parser": "^7.8.4",
+        "@babel/types": "^7.8.3",
         "debug": "^4.1.0",
         "globals": "^11.1.0",
         "lodash": "^4.17.13"
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-        "@webassemblyjs/wasm-edit": "1.8.5",
-        "@webassemblyjs/wasm-parser": "1.8.5",
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@@ -5195,7 +5400,7 @@
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-        "mkdirp": "^0.5.1",
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@@ -5238,6 +5443,12 @@
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@@ -5255,6 +5466,16 @@
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+      "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.10.0.tgz",
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+      "dev": true,
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+        "fd-slicer": "~1.1.0"
+      }
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   }
 }
diff --git a/package.json b/package.json
index 3add4d32..55d8b01d 100644
--- a/package.json
+++ b/package.json
@@ -40,16 +40,17 @@
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   },
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-    "@babel/preset-env": "7.7.7",
-    "babel-preset-minify": "^0.5.1",
-    "codemirror": "^5.52.0",
+    "@babel/core": "~7.7.7",
+    "@babel/preset-env": "~7.7.7",
+    "babel-preset-minify": "~0.5.1",
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-    "highlight.js": "^9.18.1",
-    "jison": "^0.4.18",
+    "highlight.js": "~9.18.1",
+    "jison": "~0.4.18",
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-    "underscore": "^1.9.2",
-    "webpack": "^4.42.0"
+    "puppeteer": "~3.1.0",
+    "underscore": "~1.9.2",
+    "webpack": "~4.42.0"
   },
   "dependencies": {}
 }