Fix some ES5 transpilation steps

package.json

···
     "@ampproject/rollup-plugin-closure-compiler": "^0.26.0",
     "@babel/core": "7.9.6",
     "@babel/plugin-transform-modules-commonjs": "^7.9.6",
+    "@babel/plugin-transform-template-literals": "^7.12.1",
     "@rollup/plugin-buble": "^0.21.3",
     "@rollup/plugin-commonjs": "^11.1.0",
     "@rollup/plugin-node-resolve": "^7.1.3",
···
     "npm-run-all": "^4.1.5",
     "prettier": "^2.0.5",
     "rimraf": "^3.0.2",
-    "rollup": "^2.10.2",
-    "rollup-plugin-babel": "^4.4.0"
+    "rollup": "^2.10.2"
   },
   "prettier": {
     "singleQuote": true

rollup.config.js

···
 import commonjs from '@rollup/plugin-commonjs';
 import resolve from '@rollup/plugin-node-resolve';
 import buble from '@rollup/plugin-buble';
-import babel from 'rollup-plugin-babel';
 import compiler from '@ampproject/rollup-plugin-closure-compiler';
 
 import simplifyJSTags from './scripts/simplify-jstags-plugin.js';
···
       templateString: false,
     },
     exclude: 'node_modules/**',
-  }),
-  babel({
-    babelrc: false,
-    extensions: ['ts', 'tsx', 'js'],
-    exclude: 'node_modules/**',
-    presets: [],
-    plugins: ['babel-plugin-closure-elimination'],
   }),
 ];
 

scripts/simplify-jstags-plugin.js

···
 import { transformSync as transform } from '@babel/core';
 import { createFilter } from '@rollup/pluginutils';
 
+import transformTemplateLiterals from '@babel/plugin-transform-template-literals';
+import eliminateClosures from 'babel-plugin-closure-elimination';
+
 const simplifyJSTags = ({ types: t }) => ({
   visitor: {
     TaggedTemplateExpression(path) {
···
       }
 
       return transform(code, {
-        plugins: [simplifyJSTags],
+        plugins: [
+          simplifyJSTags,
+          [transformTemplateLiterals, { loose: true }],
+          eliminateClosures,
+        ],
         babelrc: false,
       });
     },

yarn.lock

···
   dependencies:
     "@babel/types" "^7.8.3"
 
-"@babel/helper-module-imports@^7.0.0", "@babel/helper-module-imports@^7.8.3":
+"@babel/helper-module-imports@^7.8.3":
   version "7.8.3"
   resolved "https://registry.yarnpkg.com/@babel/helper-module-imports/-/helper-module-imports-7.8.3.tgz#7fe39589b39c016331b6b8c3f441e8f0b1419498"
   integrity sha512-R0Bx3jippsbAEtzkpZ/6FIiuzOURPcMjHp+Z6xPe6DtApDJx+w7UYyOLanZqO8+wKR9G10s/FmHXvxaMd9s6Kg==
···
   version "7.8.3"
   resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.8.3.tgz#9ea293be19babc0f52ff8ca88b34c3611b208670"
   integrity sha512-j+fq49Xds2smCUNYmEHF9kGNkhbet6yVIBp4e6oeQpH1RUs/Ir06xUKzDjDkGcaaokPiTNs2JBWHjaE4csUkZQ==
+
+"@babel/helper-plugin-utils@^7.10.4":
+  version "7.10.4"
+  resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.10.4.tgz#2f75a831269d4f677de49986dff59927533cf375"
+  integrity sha512-O4KCvQA6lLiMU9l2eawBPMf1xPP8xPfB3iEQw150hOVTqj/rfXz0ThTb4HEzqQfs2Bmo5Ay8BzxfzVtBrr9dVg==
 
 "@babel/helper-replace-supers@^7.8.6":
   version "7.9.6"
···
     "@babel/helper-plugin-utils" "^7.8.3"
     "@babel/helper-simple-access" "^7.8.3"
     babel-plugin-dynamic-import-node "^2.3.3"
+
+"@babel/plugin-transform-template-literals@^7.12.1":
+  version "7.12.1"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-template-literals/-/plugin-transform-template-literals-7.12.1.tgz#b43ece6ed9a79c0c71119f576d299ef09d942843"
+  integrity sha512-b4Zx3KHi+taXB1dVRBhVJtEPi9h1THCeKmae2qP0YdUHIFhVjtpqqNfxeVAa1xeHVhAy4SbHxEwx5cltAu5apw==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.10.4"
 
 "@babel/template@^7.3.3", "@babel/template@^7.8.3", "@babel/template@^7.8.6":
   version "7.8.6"
···
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/estree-walker/-/estree-walker-2.0.1.tgz#f8e030fb21cefa183b44b7ad516b747434e7a3e0"
   integrity sha512-tF0hv+Yi2Ot1cwj9eYHtxC0jB9bmjacjQs6ZBTj82H8JwUywFuc+7E83NWfNMwHXZc11mjfFcVXPe9gEP4B8dg==
-
-estree-walker@^0.6.1:
-  version "0.6.1"
-  resolved "https://registry.yarnpkg.com/estree-walker/-/estree-walker-0.6.1.tgz#53049143f40c6eb918b23671d1fe3219f3a1b362"
-  integrity sha512-SqmZANLWS0mnatqbSfRP5g8OXZC12Fgg1IwNtLsyHDzJizORW4khDfjPqJZsemPWBB2uqykUah5YpQ6epsqC/w==
 
 estree-walker@^1.0.1:
   version "1.0.1"
···
   integrity sha512-JZkJMZkAGFFPP2YqXZXPbMlMBgsxzE8ILs4lMIX/2o0L9UBw9O/Y3o6wFw/i9YLapcUJWwqbi3kdxIPdC62TIA==
   dependencies:
     glob "^7.1.3"
-
-rollup-plugin-babel@^4.4.0:
-  version "4.4.0"
-  resolved "https://registry.yarnpkg.com/rollup-plugin-babel/-/rollup-plugin-babel-4.4.0.tgz#d15bd259466a9d1accbdb2fe2fff17c52d030acb"
-  integrity sha512-Lek/TYp1+7g7I+uMfJnnSJ7YWoD58ajo6Oarhlex7lvUce+RCKRuGRSgztDO3/MF/PuGKmUL5iTHKf208UNszw==
-  dependencies:
-    "@babel/helper-module-imports" "^7.0.0"
-    rollup-pluginutils "^2.8.1"
-
-rollup-pluginutils@^2.8.1:
-  version "2.8.2"
-  resolved "https://registry.yarnpkg.com/rollup-pluginutils/-/rollup-pluginutils-2.8.2.tgz#72f2af0748b592364dbd3389e600e5a9444a351e"
-  integrity sha512-EEp9NhnUkwY8aif6bxgovPHMoMoNr2FulJziTndpt5H9RdwC47GSGuII9XxpSdzVGM0GWrNPHV6ie1LTNJPaLQ==
-  dependencies:
-    estree-walker "^0.6.1"
 
 rollup@^2.10.2:
   version "2.10.2"