Implement new APIs for inter-plugin communication (#3807)

* Implement custom resolver options

* Add custom module meta information

* Test handling of external modules

* Cache module options

* Actually handle external modules

* Unify default logic

* Make `code` an optional property for the `transform` hook.

* Use an object with prototype as default for both custom options and meta info

* Add documentation

* Update dependencies

* Update docs/05-plugin-development.md

Co-authored-by: Lars den Bakker <larsdenbakker@gmail.com>

* Update docs/05-plugin-development.md

Co-authored-by: Lars den Bakker <larsdenbakker@gmail.com>

* Update docs/05-plugin-development.md

Co-authored-by: Lars den Bakker <larsdenbakker@gmail.com>

* Update docs/05-plugin-development.md

Co-authored-by: Lars den Bakker <larsdenbakker@gmail.com>

* return `null` instead of throwing when accessing a non-exiting module info, make module info lazy.

* Improve wording for the load hook

* Improve custom resoler options section

* Improve coverage

* Fix documentation links

Co-authored-by: Lars den Bakker <larsdenbakker@gmail.com>

docs/999-big-list-of-options.md

@@ -661,7 +661,7 @@ manualChunks(id) {
 
 Be aware that manual chunks can change the behaviour of the application if side-effects are triggered before the corresponding modules are actually used.
 
-When using the function form, `manualChunks` will be passed an object as second parameter containing the functions `getModuleInfo` and `getModuleIds` that work the same way as [`this.getModuleInfo`](guide/en/#thisgetmoduleinfomoduleid-string--moduleinfo) and [`this.getModuleIds`](guide/en/#thisgetmoduleids--iterableiteratorstring) on the plugin context.
+When using the function form, `manualChunks` will be passed an object as second parameter containing the functions `getModuleInfo` and `getModuleIds` that work the same way as [`this.getModuleInfo`](guide/en/#thisgetmoduleinfomoduleid-string--moduleinfo--null) and [`this.getModuleIds`](guide/en/#thisgetmoduleids--iterableiteratorstring) on the plugin context.
 
 This can be used to dynamically determine into which manual chunk a module should be placed depending on its position in the module graph. For instance consider a scenario where you have a set of components, each of which dynamically imports a set of translated strings, i.e.
 

package.json

@@ -66,7 +66,7 @@
   "devDependencies": {
     "@rollup/plugin-alias": "^3.1.1",
     "@rollup/plugin-buble": "^0.21.3",
-    "@rollup/plugin-commonjs": "^15.0.0",
+    "@rollup/plugin-commonjs": "^15.1.0",
     "@rollup/plugin-json": "^4.1.0",
     "@rollup/plugin-node-resolve": "^9.0.0",
     "@rollup/plugin-replace": "^2.3.3",
@@ -75,7 +75,7 @@
     "@types/require-relative": "^0.8.0",
     "@types/signal-exit": "^3.0.0",
     "@types/yargs-parser": "^15.0.0",
-    "acorn": "^8.0.1",
+    "acorn": "^8.0.3",
     "acorn-class-fields": "^0.3.7",
     "acorn-jsx": "^5.3.1",
     "acorn-numeric-separator": "^0.3.6",
@@ -90,27 +90,27 @@
     "date-time": "^3.1.0",
     "es5-shim": "^4.5.14",
     "es6-shim": "^0.35.5",
-    "eslint": "^7.9.0",
-    "eslint-plugin-import": "^2.22.0",
+    "eslint": "^7.10.0",
+    "eslint-plugin-import": "^2.22.1",
     "execa": "^4.0.3",
     "fixturify": "^2.1.0",
     "hash.js": "^1.1.7",
     "husky": "^4.3.0",
     "is-reference": "^1.2.1",
-    "lint-staged": "^10.3.0",
+    "lint-staged": "^10.4.0",
     "locate-character": "^2.0.5",
     "magic-string": "^0.25.7",
-    "markdownlint-cli": "^0.23.2",
+    "markdownlint-cli": "^0.24.0",
     "micromatch": "^4.0.2",
     "mocha": "^8.1.3",
     "node-fetch": "^2.6.1",
     "nyc": "^15.1.0",
     "prettier": "^2.1.2",
     "pretty-bytes": "^5.4.1",
-    "pretty-ms": "^7.0.0",
+    "pretty-ms": "^7.0.1",
     "require-relative": "^0.8.7",
     "requirejs": "^2.3.6",
-    "rollup": "^2.26.11",
+    "rollup": "^2.28.2",
     "rollup-plugin-license": "^2.2.0",
     "rollup-plugin-string": "^3.0.0",
     "rollup-plugin-terser": "^7.0.2",
@@ -124,12 +124,12 @@
     "source-map-support": "^0.5.19",
     "sourcemap-codec": "^1.4.8",
     "systemjs": "^6.6.1",
-    "terser": "^5.3.1",
+    "terser": "^5.3.4",
     "tslib": "^2.0.1",
     "tslint": "^6.1.3",
-    "typescript": "^4.0.2",
+    "typescript": "^4.0.3",
     "url-parse": "^1.4.7",
-    "yargs-parser": "^20.0.0"
+    "yargs-parser": "^20.2.1"
   },
   "files": [
     "dist/**/*.js",

src/ExternalModule.ts

@@ -1,5 +1,9 @@
 import ExternalVariable from './ast/variables/ExternalVariable';
-import { NormalizedInputOptions, NormalizedOutputOptions } from './rollup/types';
+import {
+	CustomPluginOptions,
+	NormalizedInputOptions,
+	NormalizedOutputOptions
+} from './rollup/types';
 import { makeLegal } from './utils/identifierHelpers';
 import { isAbsolute, normalize, relative } from './utils/path';
 
@@ -10,9 +14,7 @@ export default class ExternalModule {
 	dynamicImporters: string[] = [];
 	execIndex: number;
 	exportedVariables: Map<ExternalVariable, string>;
-	id: string;
 	importers: string[] = [];
-	moduleSideEffects: boolean | 'no-treeshake';
 	mostCommonSuggestion = 0;
 	namespaceVariableName = '';
 	nameSuggestions: { [name: string]: number };
@@ -25,8 +27,9 @@ export default class ExternalModule {
 
 	constructor(
 		private readonly options: NormalizedInputOptions,
-		id: string,
-		moduleSideEffects: boolean | 'no-treeshake'
+		public readonly id: string,
+		public moduleSideEffects: boolean | 'no-treeshake',
+		public meta: CustomPluginOptions
 	) {
 		this.id = id;
 		this.execIndex = Infinity;