Added build targeting esm module (#659)

3 files changed, 217 insertions, 1 deletions

diff --git a/package-lock.json b/package-lock.json
index 55e01ad..738a284 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -27,6 +27,7 @@
       "devDependencies": {
         "@babel/core": "^7.18.7",
         "@babel/preset-env": "^7.18.7",
+        "@rollup/plugin-commonjs": "^22.0.2",
         "acorn": "^6.4.0",
         "babel-loader": "^8.2.0",
         "buffer": "^6.0.3",
@@ -41,6 +42,7 @@
         "npm-run-all": "^4.1.5",
         "nyc": "^15.1.0",
         "rimraf": "^2.7.1",
+        "rollup": "^2.79.0",
         "wait-on": "^3.3.0",
         "webpack": "^5.74.0",
         "webpack-bundle-analyzer": "^4.6.0",
@@ -2059,6 +2061,62 @@
       "integrity": "sha512-a5Sab1C4/icpTZVzZc5Ghpz88yQtGOyNqYXcZgOssB2uuAr+wF/MvN6bgtW32q7HHrvBki+BsZ0OuNv6EV3K9g==",
       "dev": true
     },
+    "node_modules/@rollup/plugin-commonjs": {
+      "version": "22.0.2",
+      "resolved": "https://registry.npmjs.org/@rollup/plugin-commonjs/-/plugin-commonjs-22.0.2.tgz",
+      "integrity": "sha512-//NdP6iIwPbMTcazYsiBMbJW7gfmpHom33u1beiIoHDEM0Q9clvtQB1T0efvMqHeKsGohiHo97BCPCkBXdscwg==",
+      "dev": true,
+      "dependencies": {
+        "@rollup/pluginutils": "^3.1.0",
+        "commondir": "^1.0.1",
+        "estree-walker": "^2.0.1",
+        "glob": "^7.1.6",
+        "is-reference": "^1.2.1",
+        "magic-string": "^0.25.7",
+        "resolve": "^1.17.0"
+      },
+      "engines": {
+        "node": ">= 12.0.0"
+      },
+      "peerDependencies": {
+        "rollup": "^2.68.0"
+      }
+    },
+    "node_modules/@rollup/plugin-commonjs/node_modules/estree-walker": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-2.0.2.tgz",
+      "integrity": "sha512-Rfkk/Mp/DL7JVje3u18FxFujQlTNR2q6QfMSMB7AvCBx91NGj/ba3kCfza0f6dVDbw7YlRf/nDrn7pQrCCyQ/w==",
+      "dev": true
+    },
+    "node_modules/@rollup/pluginutils": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@rollup/pluginutils/-/pluginutils-3.1.0.tgz",
+      "integrity": "sha512-GksZ6pr6TpIjHm8h9lSQ8pi8BE9VeubNT0OMJ3B5uZJ8pz73NPiqOtCog/x2/QzM1ENChPKxMDhiQuRHsqc+lg==",
+      "dev": true,
+      "dependencies": {
+        "@types/estree": "0.0.39",
+        "estree-walker": "^1.0.1",
+        "picomatch": "^2.2.2"
+      },
+      "engines": {
+        "node": ">= 8.0.0"
+      },
+      "peerDependencies": {
+        "rollup": "^1.20.0||^2.0.0"
+      }
+    },
+    "node_modules/@rollup/pluginutils/node_modules/@types/estree": {
+      "version": "0.0.39",
+      "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.39.tgz",
+      "integrity": "sha512-EYNwp3bU+98cpU4lAWYYL7Zz+2gryWH1qbdDTidVd6hkiR6weksdbMadyXKXNPEkQFhXM+hVO9ZygomHXp+AIw==",
+      "dev": true
+    },
+    "node_modules/@rollup/pluginutils/node_modules/estree-walker": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-1.0.1.tgz",
+      "integrity": "sha512-1fMXF3YP4pZZVozF8j/ZLfvnR8NSIljt56UhbZ5PeeDmmGHpgpdwQt7ITlGvYaQukCvuBRMLEiKiYC+oeIg4cg==",
+      "dev": true
+    },
     "node_modules/@types/eslint": {
       "version": "8.4.6",
       "resolved": "https://registry.npmjs.org/@types/eslint/-/eslint-8.4.6.tgz",
@@ -5365,6 +5423,15 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/is-reference": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/is-reference/-/is-reference-1.2.1.tgz",
+      "integrity": "sha512-U82MsXXiFIrjCK4otLT+o2NA2Cd2g5MLoOVXUZjIOhLurrRxpEXzI8O0KZHr3IjLvlAH1kTPYSuqer5T9ZVBKQ==",
+      "dev": true,
+      "dependencies": {
+        "@types/estree": "*"
+      }
+    },
     "node_modules/is-regex": {
       "version": "1.1.4",
       "resolved": "https://registry.npmjs.org/is-regex/-/is-regex-1.1.4.tgz",
@@ -6071,6 +6138,15 @@
         "node": ">=8"
       }
     },
+    "node_modules/magic-string": {
+      "version": "0.25.9",
+      "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.25.9.tgz",
+      "integrity": "sha512-RmF0AsMzgt25qzqqLc1+MbHmhdx0ojF2Fvs4XnOqz2ZOBXzzkEwc/dJQZCYHAn7v1jbVOjAZfK8msRn4BxO4VQ==",
+      "dev": true,
+      "dependencies": {
+        "sourcemap-codec": "^1.4.8"
+      }
+    },
     "node_modules/make-dir": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-3.1.0.tgz",
@@ -7725,6 +7801,35 @@
         "url": "https://github.com/sponsors/isaacs"
       }
     },
+    "node_modules/rollup": {
+      "version": "2.79.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.79.0.tgz",
+      "integrity": "sha512-x4KsrCgwQ7ZJPcFA/SUu6QVcYlO7uRLfLAy0DSA4NS2eG8japdbpM50ToH7z4iObodRYOJ0soneF0iaQRJ6zhA==",
+      "dev": true,
+      "bin": {
+        "rollup": "dist/bin/rollup"
+      },
+      "engines": {
+        "node": ">=10.0.0"
+      },
+      "optionalDependencies": {
+        "fsevents": "~2.3.2"
+      }
+    },
+    "node_modules/rollup/node_modules/fsevents": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
+      "integrity": "sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==",
+      "dev": true,
+      "hasInstallScript": true,
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
+      }
+    },
     "node_modules/rx": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/rx/-/rx-4.1.0.tgz",
@@ -8003,6 +8108,12 @@
         "source-map": "^0.6.0"
       }
     },
+    "node_modules/sourcemap-codec": {
+      "version": "1.4.8",
+      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.8.tgz",
+      "integrity": "sha512-9NykojV5Uih4lgo5So5dtw+f0JgJX30KCNI8gwhz2J9A15wD0Ml6tjHKwf6fTSa6fAdVBdZeNOs9eJ71qCk8vA==",
+      "dev": true
+    },
     "node_modules/spawn-wrap": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/spawn-wrap/-/spawn-wrap-2.0.0.tgz",
@@ -10966,6 +11077,54 @@
       "integrity": "sha512-a5Sab1C4/icpTZVzZc5Ghpz88yQtGOyNqYXcZgOssB2uuAr+wF/MvN6bgtW32q7HHrvBki+BsZ0OuNv6EV3K9g==",
       "dev": true
     },
+    "@rollup/plugin-commonjs": {
+      "version": "22.0.2",
+      "resolved": "https://registry.npmjs.org/@rollup/plugin-commonjs/-/plugin-commonjs-22.0.2.tgz",
+      "integrity": "sha512-//NdP6iIwPbMTcazYsiBMbJW7gfmpHom33u1beiIoHDEM0Q9clvtQB1T0efvMqHeKsGohiHo97BCPCkBXdscwg==",
+      "dev": true,
+      "requires": {
+        "@rollup/pluginutils": "^3.1.0",
+        "commondir": "^1.0.1",
+        "estree-walker": "^2.0.1",
+        "glob": "^7.1.6",
+        "is-reference": "^1.2.1",
+        "magic-string": "^0.25.7",
+        "resolve": "^1.17.0"
+      },
+      "dependencies": {
+        "estree-walker": {
+          "version": "2.0.2",
+          "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-2.0.2.tgz",
+          "integrity": "sha512-Rfkk/Mp/DL7JVje3u18FxFujQlTNR2q6QfMSMB7AvCBx91NGj/ba3kCfza0f6dVDbw7YlRf/nDrn7pQrCCyQ/w==",
+          "dev": true
+        }
+      }
+    },
+    "@rollup/pluginutils": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@rollup/pluginutils/-/pluginutils-3.1.0.tgz",
+      "integrity": "sha512-GksZ6pr6TpIjHm8h9lSQ8pi8BE9VeubNT0OMJ3B5uZJ8pz73NPiqOtCog/x2/QzM1ENChPKxMDhiQuRHsqc+lg==",
+      "dev": true,
+      "requires": {
+        "@types/estree": "0.0.39",
+        "estree-walker": "^1.0.1",
+        "picomatch": "^2.2.2"
+      },
+      "dependencies": {
+        "@types/estree": {
+          "version": "0.0.39",
+          "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.39.tgz",
+          "integrity": "sha512-EYNwp3bU+98cpU4lAWYYL7Zz+2gryWH1qbdDTidVd6hkiR6weksdbMadyXKXNPEkQFhXM+hVO9ZygomHXp+AIw==",
+          "dev": true
+        },
+        "estree-walker": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-1.0.1.tgz",
+          "integrity": "sha512-1fMXF3YP4pZZVozF8j/ZLfvnR8NSIljt56UhbZ5PeeDmmGHpgpdwQt7ITlGvYaQukCvuBRMLEiKiYC+oeIg4cg==",
+          "dev": true
+        }
+      }
+    },
     "@types/eslint": {
       "version": "8.4.6",
       "resolved": "https://registry.npmjs.org/@types/eslint/-/eslint-8.4.6.tgz",
@@ -13481,6 +13640,15 @@
         "isobject": "^3.0.1"
       }
     },
+    "is-reference": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/is-reference/-/is-reference-1.2.1.tgz",
+      "integrity": "sha512-U82MsXXiFIrjCK4otLT+o2NA2Cd2g5MLoOVXUZjIOhLurrRxpEXzI8O0KZHr3IjLvlAH1kTPYSuqer5T9ZVBKQ==",
+      "dev": true,
+      "requires": {
+        "@types/estree": "*"
+      }
+    },
     "is-regex": {
       "version": "1.1.4",
       "resolved": "https://registry.npmjs.org/is-regex/-/is-regex-1.1.4.tgz",
@@ -14022,6 +14190,15 @@
         }
       }
     },
+    "magic-string": {
+      "version": "0.25.9",
+      "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.25.9.tgz",
+      "integrity": "sha512-RmF0AsMzgt25qzqqLc1+MbHmhdx0ojF2Fvs4XnOqz2ZOBXzzkEwc/dJQZCYHAn7v1jbVOjAZfK8msRn4BxO4VQ==",
+      "dev": true,
+      "requires": {
+        "sourcemap-codec": "^1.4.8"
+      }
+    },
     "make-dir": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-3.1.0.tgz",
@@ -15271,6 +15448,24 @@
         }
       }
     },
+    "rollup": {
+      "version": "2.79.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.79.0.tgz",
+      "integrity": "sha512-x4KsrCgwQ7ZJPcFA/SUu6QVcYlO7uRLfLAy0DSA4NS2eG8japdbpM50ToH7z4iObodRYOJ0soneF0iaQRJ6zhA==",
+      "dev": true,
+      "requires": {
+        "fsevents": "~2.3.2"
+      },
+      "dependencies": {
+        "fsevents": {
+          "version": "2.3.2",
+          "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
+          "integrity": "sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==",
+          "dev": true,
+          "optional": true
+        }
+      }
+    },
     "rx": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/rx/-/rx-4.1.0.tgz",
@@ -15503,6 +15698,12 @@
         "source-map": "^0.6.0"
       }
     },
+    "sourcemap-codec": {
+      "version": "1.4.8",
+      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.8.tgz",
+      "integrity": "sha512-9NykojV5Uih4lgo5So5dtw+f0JgJX30KCNI8gwhz2J9A15wD0Ml6tjHKwf6fTSa6fAdVBdZeNOs9eJ71qCk8vA==",
+      "dev": true
+    },
     "spawn-wrap": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/spawn-wrap/-/spawn-wrap-2.0.0.tgz",
diff --git a/package.json b/package.json
index 86619dc..dad4f6c 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
   "jsdelivr": "dist/tesseract.min.js",
   "scripts": {
     "start": "node scripts/server.js",
-    "build": "rimraf dist && webpack --config scripts/webpack.config.prod.js",
+    "build": "rimraf dist && webpack --config scripts/webpack.config.prod.js && rollup -c scripts/rollup.esm.js",
     "profile:tesseract": "webpack-bundle-analyzer dist/tesseract-stats.json",
     "profile:worker": "webpack-bundle-analyzer dist/worker-stats.json",
     "prepublishOnly": "npm run build",
@@ -37,6 +37,7 @@
   "devDependencies": {
     "@babel/core": "^7.18.7",
     "@babel/preset-env": "^7.18.7",
+    "@rollup/plugin-commonjs": "^22.0.2",
     "acorn": "^6.4.0",
     "babel-loader": "^8.2.0",
     "buffer": "^6.0.3",
@@ -51,6 +52,7 @@
     "npm-run-all": "^4.1.5",
     "nyc": "^15.1.0",
     "rimraf": "^2.7.1",
+    "rollup": "^2.79.0",
     "wait-on": "^3.3.0",
     "webpack": "^5.74.0",
     "webpack-bundle-analyzer": "^4.6.0",
diff --git a/scripts/rollup.esm.js b/scripts/rollup.esm.js
new file mode 100644
index 0000000..c746296
--- /dev/null
+++ b/scripts/rollup.esm.js
@@ -0,0 +1,13 @@
+import commonjs from "@rollup/plugin-commonjs";
+
+export default [
+  {
+    input: "dist/tesseract.min.js",
+    output: {
+      file: "dist/tesseract.esm.min.js",
+      format: "esm",
+      banner: "/* eslint-disable */",
+    },
+    plugins: [commonjs()],
+  },
+];