feat: add initial support for using mkdist (#208)

README.md

@@ -86,6 +86,37 @@ At the most basic level, your entrypoints are configured in your `package.json`:
 There are some conventions in place of configuration that are worth noting:
 * the file type is inferred from the file name if possible (e.g. `babel.es.js` will be in 'es' format)
 * `main` defaults to CJS, `module` to ES, `browser` to UMD, and `bin` to CJS
+* if you have a folder mapped using [subpath patterns](https://nodejs.org/api/packages.html#packages_subpath_patterns) and it matches a folder within your `src` folder, the files within will be copied across and lightly transpiled using [mkdist](https://github.com/unjsio/mkdist).
+
+##### Example
+```json5
+{
+  "exports": {
+    ".": {
+      // This will be compiled in CJS and matched to src/index.ts
+      "require": "./dist/index.js",
+      // This will be compiled in ES and matched to src/index.ts
+      "import": "./dist/index.es.js"
+    },
+    // src/templates will be lightly transpiled with mkdist and copied to dist/templates
+    "./templates/*": "./dist/templates/*",
+    // siroc will not touch this
+    "./package.json": "./package.json"
+  },
+  // This will be compiled in CJS and matched to src/index.ts
+  "main": "./dist/index.js",
+  // This will be compiled in ES and matched to src/index.ts
+  "module": "./dist/index.es.js",
+  // Types will be generated for src/index.ts
+  "types": "./dist/index.d.ts",
+  "bin": {
+    // This will be compiled in CJS and matched to src/cli/index.ts
+    "siroc": "bin/cli.js",
+    // This will be compiled in CJS and matched to src/cli/runtime.ts
+    "siroc-runner": "bin/runtime.js"
+  }
+}
+```
 
 #### Build hooks
 

package.json

@@ -66,6 +66,7 @@
     "fs-extra": "^9.1.0",
     "glob": "^7.1.6",
     "jiti": "^1.6.2",
+    "mkdist": "^0.1.1",
     "rollup": "^2.40.0",
     "rollup-plugin-dts": "^2.0.1",
     "rollup-plugin-esbuild": "2.6.1",

src/core/build/index.ts

@@ -1,7 +1,8 @@
-import { dirname, join } from 'upath'
+import { dirname, join, relative } from 'upath'
 
 import { bold, gray, green } from 'chalk'
 import { remove, stat } from 'fs-extra'
+import { mkdist } from 'mkdist'
 import { rollup, watch, RollupError } from 'rollup'
 
 import type { BuildOptions, Package } from '../package'
@@ -70,6 +71,22 @@ export const build = async (
 
   logRollupConfig(pkg, rollupConfig)
 
+  await runInParallel(pkg.folderExports, folder => {
+    const { 1: distDir = folder } = folder.match(/^(.*[^*/])[*/]*$/) || []
+    const sourceFolder = pkg.resolveEntrypointFolder(distDir)
+    if (!sourceFolder) return
+
+    const srcDir = relative(pkg.options.rootDir, sourceFolder)
+    pkg.logger.info(
+      `Transpiling \`./${srcDir}\` to \`${distDir}\` with ${bold('mkdist')}.`
+    )
+    mkdist({
+      srcDir,
+      distDir: distDir.slice(2),
+      rootDir: pkg.options.rootDir,
+    })
+  })
+
   if (shouldWatch) {
     // Watch
     const watcher = watch(rollupConfig)

src/core/package/index.ts

@@ -10,6 +10,7 @@ import {
   writeFile,
   mkdirp,
   chmod,
+  pathExistsSync,
 } from 'fs-extra'
 import type { RollupOptions } from 'rollup'
 import sortPackageJson from 'sort-package-json'
@@ -30,7 +31,11 @@ import {
   RequireProperties,
 } from '../utils'
 import type { PackageJson } from './types'
-import { getEntrypointFilenames, getFlatValues } from './utils'
+import {
+  getEntrypointFilenames,
+  getEntrypointPaths,
+  getFlatValues,
+} from './utils'
 
 export interface DefaultPackageOptions {
   /**
@@ -396,7 +401,19 @@ export class Package {
         `./${this.pkg.main}`,
         `./${this.pkg.module}`,
         `./${this.pkg.browser}`,
-      ].includes(item) && !item.match(/[./]$/)
+      ].includes(item) && !/[./*]$/.test(item)
+
+    if (!exports) return []
+    if (typeof exports === 'string') return [exports].filter(filterExports)
+    if (Array.isArray(exports)) return exports.filter(filterExports)
+
+    return getFlatValues(exports).filter(filterExports)
+  }
+
+  get folderExports(): string[] {
+    const { exports } = this.pkg
+
+    const filterExports = (item: string) => /[a-z]\/\*$/.test(item)
 
     if (!exports) return []
     if (typeof exports === 'string') return [exports].filter(filterExports)
@@ -445,6 +462,20 @@ export class Package {
     return input
   }
 
+  resolveEntrypointFolder(path = this.pkg.main) {
+    if (!path) return undefined
+
+    let input!: string
+    const paths = getEntrypointPaths(path)
+
+    paths.some(path => {
+      input = this.resolvePath('src', path)
+      return pathExistsSync(input)
+    })
+
+    return input
+  }
+
   parsePerson(person: string) {
     /* eslint-disable no-unused-vars */
     /* eslint-disable @typescript-eslint/no-unused-vars */

src/core/package/utils.ts

@@ -1,11 +1,24 @@
-import { basename, sep } from 'upath'
+import { sep } from 'upath'
 import type { PackageJson } from './types'
 
 const walkDownDirectory = (pathname: string) => {
   const [first, ...rest] = pathname.split(sep)
   return rest.join(sep)
 }
 
+export const getEntrypointPaths = (path: string) => {
+  if (path.startsWith('./')) path = path.slice(2)
+
+  const filenames = new Set<string>()
+  let cwd = path
+  do {
+    filenames.add(cwd)
+    cwd = walkDownDirectory(cwd)
+  } while (cwd)
+
+  return Array.from(filenames)
+}
+
 export const getEntrypointFilenames = (path: string) => {
   if (path.startsWith('./')) path = path.slice(2)
 

yarn.lock

@@ -3661,6 +3661,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"de-indent@npm:^1.0.2":
+  version: 1.0.2
+  resolution: "de-indent@npm:1.0.2"
+  checksum: a1933a4328d053d9b0db447668521a6d0360b509c115dc5340420fd645be556c00b82e491d6b862249981ed22fbf2016080b222ad23c25038aba72cb8e3120ea
+  languageName: node
+  linkType: hard
+
 "debug@npm:4, debug@npm:4.3.1, debug@npm:^4.0.1, debug@npm:^4.1.0, debug@npm:^4.1.1, debug@npm:^4.2.0":
   version: 4.3.1
   resolution: "debug@npm:4.3.1"
@@ -4000,7 +4007,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"esbuild@npm:^0.8.56":
+"esbuild@npm:^0.8.32, esbuild@npm:^0.8.56":
   version: 0.8.56
   resolution: "esbuild@npm:0.8.56"
   bin:
@@ -4655,7 +4662,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"fs-extra@npm:^9.1.0":
+"fs-extra@npm:^9.0.1, fs-extra@npm:^9.1.0":
   version: 9.1.0
   resolution: "fs-extra@npm:9.1.0"
   dependencies:
@@ -4967,7 +4974,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"globby@npm:11.0.2, globby@npm:^11.0.1":
+"globby@npm:11.0.2, globby@npm:^11.0.1, globby@npm:^11.0.2":
   version: 11.0.2
   resolution: "globby@npm:11.0.2"
   dependencies:
@@ -5158,6 +5165,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"he@npm:^1.1.0":
+  version: 1.2.0
+  resolution: "he@npm:1.2.0"
+  bin:
+    he: bin/he
+  checksum: 212122003c20c8c17ac0c83a419b4c8e835411ff6ab9195d053ea6e4a0597cc005b5b8eabcbd57b0b0c0fe676f0049e09315845fff4e051198845491cbba260e
+  languageName: node
+  linkType: hard
+
 "hosted-git-info@npm:^2.1.4":
   version: 2.8.8
   resolution: "hosted-git-info@npm:2.8.8"
@@ -6374,7 +6390,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"jiti@npm:^1.6.2":
+"jiti@npm:^1.2.0, jiti@npm:^1.6.2":
   version: 1.6.2
   resolution: "jiti@npm:1.6.2"
   bin:
@@ -7146,13 +7162,38 @@ __metadata:
   languageName: node
   linkType: hard
 
+"mkdist@npm:^0.1.1":
+  version: 0.1.1
+  resolution: "mkdist@npm:0.1.1"
+  dependencies:
+    defu: ^3.2.2
+    esbuild: ^0.8.32
+    fs-extra: ^9.0.1
+    globby: ^11.0.2
+    jiti: ^1.2.0
+    mri: ^1.1.6
+    upath: ^2.0.1
+    vue-template-compiler: ^2.6.12
+  bin:
+    mkdist: dist/cli.js
+  checksum: dae3891b9da0036bbdd7f2343ab8389e81374c06095eac9d7b1fe70d79586e51f0a42282f583605931ca5973e749c5982cd77a6583a4e1eeda32c098d83b0776
+  languageName: node
+  linkType: hard
+
 "modify-values@npm:^1.0.0":
   version: 1.0.1
   resolution: "modify-values@npm:1.0.1"
   checksum: 55165ae8b4ea2aafebe5027dd427d4a833d54606c81546f4d3c04943d99d194ac9481fa076719f326d243c475e2dfa5cf0219e68cffbbf9c44b24e46eb889779
   languageName: node
   linkType: hard
 
+"mri@npm:^1.1.6":
+  version: 1.1.6
+  resolution: "mri@npm:1.1.6"
+  checksum: 87a09465063063da6d69d98ac75a6206a597c7533561c74e8aab5e6490ebe2a0e94c583fb6e02429e1f4291286a9549eb6a9699c83f5bad252c2c9b4eada97da
+  languageName: node
+  linkType: hard
+
 "ms@npm:2.0.0":
   version: 2.0.0
   resolution: "ms@npm:2.0.0"
@@ -8880,6 +8921,7 @@ __metadata:
     jest: ^26.6.3
     jiti: ^1.6.2
     lint-staged: ^10.5.4
+    mkdist: ^0.1.1
     prettier: ^2.2.1
     release-it: 14.4.1
     rollup: ^2.40.0
@@ -10053,6 +10095,16 @@ typescript@^4.2.3:
   languageName: node
   linkType: hard
 
+"vue-template-compiler@npm:^2.6.12":
+  version: 2.6.12
+  resolution: "vue-template-compiler@npm:2.6.12"
+  dependencies:
+    de-indent: ^1.0.2
+    he: ^1.1.0
+  checksum: 5b05dda398cc1df7ba244316ddfb8f6463dbaafb4d23a4ac7e1cb8914e813a464f4ac055e41ac6e60feeadd4cccdeec1111fac592f2bb4eeb320889846a18912
+  languageName: node
+  linkType: hard
+
 "w3c-hr-time@npm:^1.0.2":
   version: 1.0.2
   resolution: "w3c-hr-time@npm:1.0.2"