chore: replace microbundle with rollup (#3115)

* refactor: mv gas estimate chains out of component

* chore: replace microbundle with rollup

* chore: use ts rollup config

* chore: rename lib to widgets

* chore: add rollup doc comment

* feat: rollup typings

* fix: retain tsconfig decl dir

.github/workflows/bundle.yaml

@@ -1,4 +1,4 @@
-name: Bundle Dependency Check
+name: Widgets
 on:
   push:
     branches:
@@ -8,8 +8,8 @@ on:
       - main
 
 jobs:
-  depcheck:
-    name: Bundle depcheck
+  build:
+    name: Build
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -36,8 +36,5 @@ jobs:
       - name: Install dependencies
         run: yarn install --frozen-lockfile
 
-      - name: Bundle
-        run: yarn bundle
-
-      - name: Depcheck
-        run: yarn bundle:depcheck
+      - name: Build
+        run: yarn widgets:build

.gitignore

@@ -11,10 +11,6 @@
 /src/locales/**/pseudo.po
 /src/state/data/generated.ts
 
-# generated assets
-/src/lib/assets/svg/*.tsx
-/src/lib/assets/fonts/*.css
-
 # dependencies
 /node_modules
 
@@ -24,7 +20,7 @@
 # production
 /build
 
-# bundle
+# widgets
 /dist
 
 # misc

depcheck.js

@@ -1,28 +0,0 @@
-#!/bin/node
-/**
- * Checks if any dependencies have been bundled with the interface library.
- * Exits with non-zero status if dependencies are included in the bundle.
- */
-/* eslint-disable */
-
-const { readFile } = require('fs')
-
-function checkDeps(err, sourcemap) {
-  if (err) {
-      console.error(err)
-      process.exit(1)
-  }
-
-  const includesDeps = sourcemap.includes('node_modules')
-  if (includesDeps) {
-      const deps = [...sourcemap.toString().matchAll(/node_modules[\\\/]([^\\\/]*)/g)].map(([, match]) => match)
-      console.error(`
-Sourcemap includes node_modules folder(s). External deps must be bundled under "dependencies".
-
-To fix, run: \`yarn add ${deps.join(' ')}\`
-`)
-      process.exit(1)
-  }
-}
-
-readFile('dist/interface.esm.js.map', checkDeps)

package.json

@@ -23,7 +23,11 @@
     "@reach/portal": "^0.10.3",
     "@react-hook/window-scroll": "^1.3.0",
     "@reduxjs/toolkit": "^1.6.1",
-    "@svgr/cli": "^5.5.0",
+    "@rollup/plugin-eslint": "^8.0.1",
+    "@rollup/plugin-json": "^4.1.0",
+    "@rollup/plugin-replace": "^3.0.1",
+    "@rollup/plugin-url": "^6.1.0",
+    "@svgr/rollup": "^6.2.0",
     "@testing-library/jest-dom": "^5.14.1",
     "@testing-library/react": "^12.0.0",
     "@testing-library/react-hooks": "^7.0.2",
@@ -85,7 +89,6 @@
     "graphql-request": "^3.4.0",
     "inter-ui": "^3.13.1",
     "jest-styled-components": "^7.0.5",
-    "microbundle": "^0.13.3",
     "ms.macro": "^2.0.0",
     "polyfill-object.fromentries": "^1.0.1",
     "prettier": "^2.2.1",
@@ -100,6 +103,10 @@
     "react-spring": "^8.0.27",
     "react-use-gesture": "^6.0.14",
     "redux-localstorage-simple": "^2.3.1",
+    "rollup": "^2.63.0",
+    "rollup-plugin-dts": "^4.1.0",
+    "rollup-plugin-scss": "^3.0.0",
+    "rollup-plugin-typescript2": "^0.31.1",
     "sass": "^1.45.1",
     "serve": "^11.3.2",
     "start-server-and-test": "^1.11.0",
@@ -126,17 +133,13 @@
     "i18n:extract": "lingui extract --locale en-US",
     "i18n:compile": "yarn i18n:extract && lingui compile",
     "i18n:pseudo": "lingui extract --locale pseudo && lingui compile",
-    "postinstall": "yarn contracts:compile && yarn graphql:generate && yarn i18n:compile && yarn assets:generate",
+    "postinstall": "yarn contracts:compile && yarn graphql:generate && yarn i18n:compile",
     "start": "react-scripts start",
     "build": "react-scripts build",
     "test": "react-scripts test --env=./custom-test-env.js",
     "test:e2e": "start-server-and-test 'serve build -l 3000' http://localhost:3000 'cypress run --record'",
-    "assets:generate": "yarn assets:svg:generate && yarn assets:font:generate",
-    "assets:svg:generate": "svgr -d src/lib/assets/svg --ext tsx --typescript src/lib/assets/svg && rm src/lib/assets/svg/index.tsx",
-    "assets:font:generate": "sass src/lib/assets/fonts/index.scss src/lib/assets/fonts/index.css --no-source-map -I node_modules",
-    "bundle": "microbundle --define process.env.REACT_APP_IS_WIDGET=true --tsconfig tsconfig.lib.json src/lib/index.tsx --format esm,cjs",
-    "bundle:depcheck": "node depcheck.js",
-    "cosmos": "cross-env FAST_REFRESH=false REACT_APP_IS_WIDGET=true cosmos"
+    "widgets:start": "cross-env FAST_REFRESH=false REACT_APP_IS_WIDGET=true cosmos",
+    "widgets:build": "rollup --config --failAfterWarnings --configPlugin typescript2"
   },
   "browserslist": {
     "production": [

rollup.config.ts

@@ -0,0 +1,63 @@
+/**
+ * Bundles the widgets library, which is released independently of the interface application.
+ * This library lives in src/lib, but shares code with the interface application.
+ */
+
+import eslint from '@rollup/plugin-eslint'
+import json from '@rollup/plugin-json'
+import replace from '@rollup/plugin-replace'
+import url from '@rollup/plugin-url'
+import svgr from '@svgr/rollup'
+import dts from 'rollup-plugin-dts'
+import sass from 'rollup-plugin-scss'
+import typescript from 'rollup-plugin-typescript2'
+
+import { dependencies } from './package.json'
+
+const deps = Object.keys(dependencies)
+
+const replacements = {
+  'process.env.REACT_APP_IS_WIDGET': true,
+}
+
+const library = {
+  input: 'src/lib/index.tsx',
+  output: [
+    {
+      file: 'dist/widgets.js',
+      format: 'cjs',
+      inlineDynamicImports: true,
+      sourcemap: true,
+    },
+    {
+      file: 'dist/widgets.esm.js',
+      format: 'esm',
+      inlineDynamicImports: true,
+      sourcemap: true,
+    },
+  ],
+  // necessary because some nested imports (eg jotai/*) would otherwise not resolve.
+  external: (source: string) => Boolean(deps.find((dep) => source === dep || source.startsWith(dep + '/'))),
+  plugins: [
+    eslint({ include: ['**/*.js', '**/*.jsx', '**/*.ts', '**/*.tsx'] }),
+    json(), // imports json
+    replace({ ...replacements, preventAssignment: true }),
+    url(), // imports files (including svgs) as data URIs
+    svgr({ exportType: 'named', svgo: false }), // imports svgs as React components
+    sass(), // imports sass styles
+    typescript({ tsconfig: './tsconfig.lib.json', useTsconfigDeclarationDir: true }),
+  ],
+}
+
+const typings = {
+  input: 'dist/dts/lib/index.d.ts',
+  output: {
+    file: 'dist/widgets.d.ts',
+    format: 'es',
+  },
+  external: (source: string) => source.endsWith('.scss'),
+  plugins: [dts({ compilerOptions: { baseUrl: 'dist/dts' } })],
+}
+
+const config = [library, typings]
+export default config

src/components/swap/AdvancedSwapDetails.tsx

@@ -2,6 +2,7 @@ import { Trans } from '@lingui/macro'
 import { Currency, Percent, TradeType } from '@uniswap/sdk-core'
 import Card from 'components/Card'
 import { LoadingRows } from 'components/Loader/styled'
+import { SUPPORTED_GAS_ESTIMATE_CHAIN_IDS } from 'constants/chains'
 import useActiveWeb3React from 'hooks/useActiveWeb3React'
 import { useContext, useMemo } from 'react'
 import { InterfaceTrade } from 'state/routing/types'
@@ -12,7 +13,6 @@ import { computeRealizedLPFeePercent } from '../../utils/prices'
 import { AutoColumn } from '../Column'
 import { RowBetween, RowFixed } from '../Row'
 import FormattedPriceImpact from './FormattedPriceImpact'
-import { SUPPORTED_GAS_ESTIMATE_CHAIN_IDS } from './GasEstimateBadge'
 
 const StyledCard = styled(Card)`
   padding: 0;

src/components/swap/GasEstimateBadge.tsx

@@ -10,7 +10,6 @@ import styled from 'styled-components/macro'
 import { ThemedText } from 'theme'
 
 import { ReactComponent as GasIcon } from '../../assets/images/gas-icon.svg'
-import { SupportedChainId } from '../../constants/chains'
 import { ResponsiveTooltipContainer } from './styleds'
 import SwapRoute from './SwapRoute'
 
@@ -32,8 +31,6 @@ const StyledGasIcon = styled(GasIcon)`
   }
 `
 
-export const SUPPORTED_GAS_ESTIMATE_CHAIN_IDS = [SupportedChainId.MAINNET, SupportedChainId.POLYGON]
-
 export default function GasEstimateBadge({
   trade,
   loading,

src/components/swap/SwapDetailsDropdown.tsx

@@ -6,6 +6,7 @@ import { AutoColumn } from 'components/Column'
 import { LoadingOpacityContainer } from 'components/Loader/styled'
 import Row, { RowBetween, RowFixed } from 'components/Row'
 import { MouseoverTooltipContent } from 'components/Tooltip'
+import { SUPPORTED_GAS_ESTIMATE_CHAIN_IDS } from 'constants/chains'
 import useActiveWeb3React from 'hooks/useActiveWeb3React'
 import { darken } from 'polished'
 import { useState } from 'react'
@@ -15,7 +16,7 @@ import styled, { keyframes, useTheme } from 'styled-components/macro'
 import { HideSmall, ThemedText } from 'theme'
 
 import { AdvancedSwapDetails } from './AdvancedSwapDetails'
-import GasEstimateBadge, { SUPPORTED_GAS_ESTIMATE_CHAIN_IDS } from './GasEstimateBadge'
+import GasEstimateBadge from './GasEstimateBadge'
 import { ResponsiveTooltipContainer } from './styleds'
 import SwapRoute from './SwapRoute'
 import TradePrice from './TradePrice'

src/components/swap/SwapRoute.tsx

@@ -7,6 +7,7 @@ import { AutoColumn } from 'components/Column'
 import { LoadingRows } from 'components/Loader/styled'
 import RoutingDiagram, { RoutingDiagramEntry } from 'components/RoutingDiagram/RoutingDiagram'
 import { AutoRow, RowBetween } from 'components/Row'
+import { SUPPORTED_GAS_ESTIMATE_CHAIN_IDS } from 'constants/chains'
 import useActiveWeb3React from 'hooks/useActiveWeb3React'
 import useAutoRouterSupported from 'hooks/useAutoRouterSupported'
 import { memo, useState } from 'react'
@@ -16,7 +17,6 @@ import { useDarkModeManager } from 'state/user/hooks'
 import styled from 'styled-components/macro'
 import { Separator, ThemedText } from 'theme'
 
-import { SUPPORTED_GAS_ESTIMATE_CHAIN_IDS } from './GasEstimateBadge'
 import { AutoRouterLabel, AutoRouterLogo } from './RouterLabel'
 
 const Wrapper = styled(AutoColumn)<{ darkMode?: boolean; fixedOpen?: boolean }>`

src/constants/chains.ts

@@ -25,6 +25,8 @@ export const ALL_SUPPORTED_CHAIN_IDS: SupportedChainId[] = Object.values(Support
   (id) => typeof id === 'number'
 ) as SupportedChainId[]
 
+export const SUPPORTED_GAS_ESTIMATE_CHAIN_IDS = [SupportedChainId.MAINNET, SupportedChainId.POLYGON]
+
 /**
  * All the chain IDs that are running the Ethereum protocol.
  */

src/hooks/useSwapSlippageTolerance.ts

@@ -1,6 +1,6 @@
 import { Trade } from '@uniswap/router-sdk'
 import { Currency, CurrencyAmount, Percent, TradeType } from '@uniswap/sdk-core'
-import { SUPPORTED_GAS_ESTIMATE_CHAIN_IDS } from 'components/swap/GasEstimateBadge'
+import { SUPPORTED_GAS_ESTIMATE_CHAIN_IDS } from 'constants/chains'
 import { L2_CHAIN_IDS } from 'constants/chains'
 import useActiveWeb3React from 'hooks/useActiveWeb3React'
 import JSBI from 'jsbi'

src/lib/icons/index.tsx

@@ -1,8 +1,4 @@
 /* eslint-disable no-restricted-imports */
-import CheckIcon from 'lib/assets/svg/Check'
-import ExpandoIcon from 'lib/assets/svg/Expando'
-import LogoIcon from 'lib/assets/svg/Logo'
-import SpinnerIcon from 'lib/assets/svg/Spinner'
 import styled, { Color, css, keyframes } from 'lib/theme'
 import { FunctionComponent, SVGProps } from 'react'
 import { Icon as FeatherIcon } from 'react-feather'
@@ -22,6 +18,11 @@ import {
   X as XIcon,
 } from 'react-feather'
 
+import { ReactComponent as CheckIcon } from '../assets/svg/check.svg'
+import { ReactComponent as ExpandoIcon } from '../assets/svg/expando.svg'
+import { ReactComponent as LogoIcon } from '../assets/svg/logo.svg'
+import { ReactComponent as SpinnerIcon } from '../assets/svg/spinner.svg'
+
 type SVGIcon = FunctionComponent<SVGProps<SVGSVGElement>>
 
 function icon(Icon: FeatherIcon | SVGIcon) {

src/lib/lib.d.ts

@@ -0,0 +1,43 @@
+declare module '*.avif' {
+  const src: string
+  export default src
+}
+
+declare module '*.bmp' {
+  const src: string
+  export default src
+}
+
+declare module '*.gif' {
+  const src: string
+  export default src
+}
+
+declare module '*.jpg' {
+  const src: string
+  export default src
+}
+
+declare module '*.jpeg' {
+  const src: string
+  export default src
+}
+
+declare module '*.png' {
+  const src: string
+  export default src
+}
+
+declare module '*.webp' {
+  const src: string
+  export default src
+}
+
+declare module '*.svg' {
+  import * as React from 'react'
+
+  export const ReactComponent: React.FunctionComponent<React.SVGProps<SVGSVGElement> & { title?: string }>
+
+  const src: string
+  export default src
+}

src/lib/theme/index.tsx

@@ -1,4 +1,4 @@
-import '../assets/fonts/index.css' // microbundle requires relative css paths
+import '../assets/fonts.scss'
 
 import { mix, transparentize } from 'polished'
 import { createContext, ReactNode, useContext, useMemo, useState } from 'react'

tsconfig.lib.json

@@ -1,15 +1,18 @@
 {
   "extends": "./tsconfig.base.json",
   "compilerOptions": {
-    "jsx": "preserve",
+    "jsx": "react-jsx",
+    "declaration": true,
+    "declarationDir": "dist/dts",
     "baseUrl": "src/lib",
     "paths": {
       "lib/*": ["./*"],
       "abis/*": ["../abis/*"],
+      "assets/*": ["../assets/*"],
       "constants/*": ["../constants/*"],
       "hooks/*": ["../hooks/*"],
       "state/*": ["../state/*"],
-      "types/*": ["../types/*"]
+      "types/*": ["../types/*"],
     },
   },
   "exclude": ["node_modules", "src/lib/**/*.test.*"],