wasm from emscripten

.github/workflows/test.yml

@@ -11,7 +11,7 @@ on:
 
 defaults:
   run:
-    shell: bash
+    shell: bash -e -l {0}
 
 jobs:
   test:
@@ -24,23 +24,28 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Install node
-        uses: actions/setup-node@v4
+      - name: Set conda environment
+        uses: mamba-org/setup-micromamba@main
         with:
-          node-version: 20
+          environment-name: cockle
+          environment-file: environment-dev.yml
+          init-shell: bash
+          cache-downloads: true
 
       - name: Install dependencies
-        run: |
-          npm install
+        run: npm install
+
+      - name: Fetch wasm dependencies
+        run: npm run fetch:wasm
 
       - name: Build
         run: |
           npm run build
 
-      - name: Lint
-        run: |
-          npm run lint:check
-
       - name: Run tests
         run: |
           npm t
+
+      - name: Lint
+        run: |
+          npm run lint:check

environment-dev.yml

@@ -0,0 +1,6 @@
+name: cockle
+channels:
+  - conda-forge
+dependencies:
+  - micromamba
+  - nodejs =20

package.json

@@ -1,134 +1,137 @@
 {
-    "name": "@jupyterlite/cockle",
-    "version": "0.0.5",
-    "description": "In browser bash-like shell",
-    "homepage": "https://github.com/jupyterlite/cockle",
-    "license": "BSD-3-Clause",
-    "author": "Ian Thomas",
-    "repository": {
-        "type": "git",
-        "url": "git+https://github.com/jupyterlite/cockle.git"
-    },
-    "bugs": {
-        "url": "https://github.com/jupyterlite/cockle/issues"
-    },
-    "files": [
-        "lib/**/*.{d.ts,eot,gif,html,jpg,js,js.map,json,png,svg,woff2,ttf}",
-        "src/**/*.ts"
-    ],
-    "main": "lib/index.js",
-    "types": "lib/index.d.ts",
-    "scripts": {
-        "build": "tsc",
-        "eslint": "npm run eslint:check -- --fix",
-        "eslint:check": "eslint . --cache --ext .ts,.tsx",
-        "lint": "npm run prettier && npm run eslint",
-        "lint:check": "npm run prettier:check && npm run eslint:check",
-        "prepack": "npm install && npm run build",
-        "prettier": "prettier --list-different --write \"**/*{.ts,.tsx,.js,.jsx,.css,.json,.md,.yml}\"",
-        "prettier:check": "prettier --list-different \"**/*{.ts,.tsx,.js,.jsx,.css,.json,.md,.yml}\"",
-        "test": "jest"
-    },
-    "dependencies": {
-        "@jupyterlab/services": "^7.1.6",
-        "@jupyterlite/contents": "^0.4.0-beta.0"
-    },
-    "devDependencies": {
-        "@playwright/test": "^1.45.1",
-        "@types/jest": "^29.5.12",
-        "@types/json-schema": "^7.0.15",
-        "@types/react": "^18.2.79",
-        "@typescript-eslint/eslint-plugin": "^7.16.1",
-        "@typescript-eslint/parser": "^7.16.1",
-        "eslint": "^8.56.0",
-        "eslint-config-prettier": "^9.1.0",
-        "eslint-plugin-prettier": "^5.1.3",
-        "jest": "^29.7.0",
-        "jest-environment-jsdom": "^29.7.0",
-        "prettier": "^3.3.3",
-        "ts-jest": "^29.1.2",
-        "typescript": "^5.4.5"
-    },
-    "eslintIgnore": [
-        "node_modules",
-        "dist",
-        "coverage",
-        "**/*.d.ts",
-        "tests",
-        "**/__tests__",
-        "ui-tests",
-        "**/package-lock.json"
-    ],
-    "eslintConfig": {
-        "extends": [
-            "eslint:recommended",
-            "plugin:@typescript-eslint/eslint-recommended",
-            "plugin:@typescript-eslint/recommended",
-            "plugin:prettier/recommended"
-        ],
-        "parser": "@typescript-eslint/parser",
-        "parserOptions": {
-            "project": "tsconfig.json",
-            "sourceType": "module"
-        },
-        "plugins": [
-            "@typescript-eslint"
-        ],
-        "rules": {
-            "@typescript-eslint/naming-convention": [
-                "error",
-                {
-                    "selector": "interface",
-                    "format": [
-                        "PascalCase"
-                    ],
-                    "custom": {
-                        "regex": "^I[A-Z]",
-                        "match": true
-                    }
-                }
-            ],
-            "@typescript-eslint/no-unused-vars": [
-                "warn",
-                {
-                    "args": "none"
-                }
-            ],
-            "@typescript-eslint/no-explicit-any": "off",
-            "@typescript-eslint/no-namespace": "off",
-            "@typescript-eslint/no-use-before-define": "off",
-            "@typescript-eslint/quotes": [
-                "error",
-                "single",
-                {
-                    "avoidEscape": true,
-                    "allowTemplateLiterals": false
-                }
-            ],
-            "curly": [
-                "error",
-                "all"
-            ],
-            "eqeqeq": "error",
-            "prefer-arrow-callback": "error"
-        }
-    },
-    "prettier": {
-        "printWidth": 100,
-        "singleQuote": true,
-        "trailingComma": "none",
-        "arrowParens": "avoid",
-        "endOfLine": "auto",
-        "overrides": [
-            {
-                "files": "package.json",
-                "options": {
-                    "tabWidth": 4
-                }
-            }
-        ]
-    },
-    "publishConfig": {
-        "access": "public"
-    }
-}
+  "name": "@jupyterlite/cockle",
+  "version": "0.0.5",
+  "description": "In browser bash-like shell",
+  "homepage": "https://github.com/jupyterlite/cockle",
+  "license": "BSD-3-Clause",
+  "author": "Ian Thomas",
+  "repository": {
+      "type": "git",
+      "url": "git+https://github.com/jupyterlite/cockle.git"
+  },
+  "bugs": {
+      "url": "https://github.com/jupyterlite/cockle/issues"
+  },
+  "files": [
+      "lib/**/*.{d.ts,eot,gif,html,jpg,js,js.map,json,png,svg,woff2,ttf}",
+      "src/**/*.ts"
+  ],
+  "main": "lib/index.js",
+  "types": "lib/index.d.ts",
+  "scripts": {
+      "fetch:wasm:create-env": "micromamba create -p $(pwd)/cockle_wasm_env -y lua cockle_fs grep coreutils --platform=emscripten-wasm32 -c https://repo.mamba.pm/emscripten-forge -c https://repo.mamba.pm/conda-forge",
+      "fetch:wasm:copy": "cp -r $(pwd)/cockle_wasm_env/bin/*.js src/wasm && cp -r $(pwd)/cockle_wasm_env/bin/*.wasm src/wasm",
+      "fetch:wasm" : "npm run fetch:wasm:create-env && npm run fetch:wasm:copy",
+      "build": "tsc",
+      "eslint": "npm run eslint:check -- --fix",
+      "eslint:check": "eslint . --cache --ext .ts,.tsx",
+      "lint": "npm run prettier && npm run eslint",
+      "lint:check": "npm run prettier:check && npm run eslint:check",
+      "prepack": "npm install && npm run build",
+      "prettier": "prettier --list-different --write \"**/*{.ts,.tsx,.js,.jsx,.css,.json,.md,.yml}\"",
+      "prettier:check": "prettier --list-different \"**/*{.ts,.tsx,.js,.jsx,.css,.json,.md,.yml}\"",
+      "test": "jest"
+  },
+  "dependencies": {
+      "@jupyterlab/services": "^7.1.6",
+      "@jupyterlite/contents": "^0.4.0-beta.0"
+  },
+  "devDependencies": {
+      "@playwright/test": "^1.45.1",
+      "@types/jest": "^29.5.12",
+      "@types/json-schema": "^7.0.15",
+      "@types/react": "^18.2.79",
+      "@typescript-eslint/eslint-plugin": "^7.16.1",
+      "@typescript-eslint/parser": "^7.16.1",
+      "eslint": "^8.56.0",
+      "eslint-config-prettier": "^9.1.0",
+      "eslint-plugin-prettier": "^5.1.3",
+      "jest": "^29.7.0",
+      "jest-environment-jsdom": "^29.7.0",
+      "prettier": "^3.3.3",
+      "ts-jest": "^29.1.2",
+      "typescript": "^5.4.5"
+  },
+  "eslintIgnore": [
+      "node_modules",
+      "dist",
+      "coverage",
+      "**/*.d.ts",
+      "tests",
+      "**/__tests__",
+      "ui-tests",
+      "**/package-lock.json"
+  ],
+  "eslintConfig": {
+      "extends": [
+          "eslint:recommended",
+          "plugin:@typescript-eslint/eslint-recommended",
+          "plugin:@typescript-eslint/recommended",
+          "plugin:prettier/recommended"
+      ],
+      "parser": "@typescript-eslint/parser",
+      "parserOptions": {
+          "project": "tsconfig.json",
+          "sourceType": "module"
+      },
+      "plugins": [
+          "@typescript-eslint"
+      ],
+      "rules": {
+          "@typescript-eslint/naming-convention": [
+              "error",
+              {
+                  "selector": "interface",
+                  "format": [
+                      "PascalCase"
+                  ],
+                  "custom": {
+                      "regex": "^I[A-Z]",
+                      "match": true
+                  }
+              }
+          ],
+          "@typescript-eslint/no-unused-vars": [
+              "warn",
+              {
+                  "args": "none"
+              }
+          ],
+          "@typescript-eslint/no-explicit-any": "off",
+          "@typescript-eslint/no-namespace": "off",
+          "@typescript-eslint/no-use-before-define": "off",
+          "@typescript-eslint/quotes": [
+              "error",
+              "single",
+              {
+                  "avoidEscape": true,
+                  "allowTemplateLiterals": false
+              }
+          ],
+          "curly": [
+              "error",
+              "all"
+          ],
+          "eqeqeq": "error",
+          "prefer-arrow-callback": "error"
+      }
+  },
+  "prettier": {
+      "printWidth": 100,
+      "singleQuote": true,
+      "trailingComma": "none",
+      "arrowParens": "avoid",
+      "endOfLine": "auto",
+      "overrides": [
+          {
+              "files": "package.json",
+              "options": {
+                  "tabWidth": 4
+              }
+          }
+      ]
+  },
+  "publishConfig": {
+      "access": "public"
+  }
+}

src/command_registry.ts

@@ -1,15 +1,17 @@
-import { ICommandRunner } from './commands/command_runner';
-import { BuiltinCommandRunner } from './commands/builtin_command_runner';
-import { CoreutilsCommandRunner } from './commands/coreutils_command_runner';
-import { GrepCommandRunner } from './commands/grep_command_runner';
+import { ICommandRunner } from "./commands/command_runner"
+import { BuiltinCommandRunner } from "./commands/builtin_command_runner"
+import { CoreutilsCommandRunner } from "./commands/coreutils_command_runner"
+import { GrepCommandRunner } from "./commands/grep_command_runner"
+import { LuaCommandRunner } from "./commands/lua_command_runner"
 
 export class CommandRegistry {
   private constructor() {
     this._commandRunners = [
       new BuiltinCommandRunner(),
       new CoreutilsCommandRunner(),
-      new GrepCommandRunner()
-    ];
+      new GrepCommandRunner(),
+      new LuaCommandRunner(),
+    ]
 
     // Command name -> runner mapping
     for (const runner of this._commandRunners) {

src/commands/lua_command_runner.ts

@@ -0,0 +1,12 @@
+import * as LuaModule from "../wasm/lua.js"
+import { WasmCommandRunner } from "./wasm_command_runner"
+
+export class LuaCommandRunner extends WasmCommandRunner {
+  names(): string[] {
+    return ["lua"]
+  }
+
+  protected _getWasmModule(): any {
+    return LuaModule.default
+  }
+}

src/wasm/.gitignore

@@ -0,0 +1,4 @@
+# the wasm files (and the js glue code) are generated by the build process
+# via npm run 
+*.wasm
+*.js