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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,12 +1,3 @@ | ||
| import { Visitor } from 'estraverse'; | ||
| import * as ts from 'typescript'; | ||
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|
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| export { jsParser } from './js-parser'; | ||
| export { tsParser } from './ts-parser'; | ||
| export { jsParser, transformer, AstParserVisitors } from './js-parser'; | ||
| export { tsParser, AstParserTsTransformers } from './ts-parser'; | ||
| export { loadTsConfig, isFunction } from './utils'; | ||
|
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| export type AstParserVisitors = Visitor | Visitor[] | undefined; | ||
| export type AstParserTsTransformers = | ||
| | ts.TransformerFactory<ts.Node> | ||
| | ts.TransformerFactory<ts.Node>[] | ||
| | undefined; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,44 +1,66 @@ | ||
| import { Parser } from 'acorn'; | ||
| import { generate } from 'astring'; | ||
| import { replace, Visitor } from 'estraverse'; | ||
| import { SourceMapGenerator } from 'source-map'; | ||
|
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| import { isFunction } from './utils'; | ||
|
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| import type { Node } from 'estree'; | ||
|
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| const isFunction = (v: unknown) => | ||
| [ | ||
| '[object Function]', | ||
| '[object GeneratorFunction]', | ||
| '[object AsyncFunction]', | ||
| '[object Promise]', | ||
| ].includes(Object.prototype.toString.call(v)); | ||
| export type AstParserVisitors = Visitor | Visitor[] | undefined; | ||
|
|
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| /** | ||
| * Create an AST representation of the provided source and use the | ||
| * visitor object to transform it if provided | ||
| */ | ||
| export function jsParser(source: string, visitors?: Visitor | Visitor[]) { | ||
| export function jsParser( | ||
| source: string, | ||
| file: string, | ||
| visitors?: AstParserVisitors, | ||
| ) { | ||
| if (!visitors) { | ||
| /* eslint-disable-next-line no-console */ | ||
| console.warn( | ||
| '[esbuildPluginAst]: No javascript visitor provided, the plugin will have no effect.', | ||
| ); | ||
| return source; | ||
| return { code: source }; | ||
| } | ||
|
|
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| const visitorArray = Array.isArray(visitors) ? visitors : [visitors]; | ||
|
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| let ast = Parser.parse(source, { | ||
| const ast = Parser.parse(source, { | ||
| ecmaVersion: 'latest', | ||
| sourceType: 'module', | ||
| }) as Node; | ||
|
|
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| return transformer({ ast, file, visitors }); | ||
| } | ||
|
|
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| type TransformerOptions<N extends Node> = { | ||
| ast: N; | ||
| file: string; | ||
| visitors?: AstParserVisitors; | ||
| }; | ||
|
|
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| export function transformer<N extends Node>({ | ||
| ast, | ||
| file, | ||
| visitors, | ||
| }: TransformerOptions<N>) { | ||
| const visitorArray = Array.isArray(visitors) ? visitors : [visitors]; | ||
|
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| let newAst = ast; | ||
|
|
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| for (const visitor of visitorArray) { | ||
| if (!isFunction(visitor.enter) && !isFunction(visitor.leave)) { | ||
| if ( | ||
| typeof visitor === 'undefined' || | ||
| (!isFunction(visitor?.enter) && !isFunction(visitor?.leave)) | ||
| ) { | ||
| continue; | ||
| } | ||
|
|
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| ast = replace(ast, visitor); | ||
| newAst = replace(newAst, visitor) as N; | ||
| } | ||
|
|
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| return generate(ast); | ||
| const map = new SourceMapGenerator({ file }); | ||
|
|
||
| return { code: generate(newAst, { sourceMap: map }), ast: newAst, map }; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| # rollup-plugin-ast-trasform | ||
|
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| Plugin to transform JavaScript and TypeScript AST with rollup | ||
|
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| ## Installation | ||
|
|
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| ``` | ||
| npm i -D @liip/rollup-plugin-ast-transform | ||
| ``` |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| import base from '../../jest.base.config'; | ||
|
|
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| const id = 'rollup-plugin-ast-transform'; | ||
| const root = `<rootDir>/packages/${id}`; | ||
|
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| module.exports = { | ||
| ...base, | ||
| id, | ||
| displayName: id, | ||
| rootDir: '../..', | ||
| roots: [root], | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| { | ||
| "name": "@liip/rollup-plugin-ast-transform", | ||
| "version": "0.1.0", | ||
| "description": "Plugin to transform JavaScript and TypeScript AST with rollup", | ||
| "keywords": [ | ||
| "rollup", | ||
| "plugin", | ||
| "ast", | ||
| "transform" | ||
| ], | ||
| "author": { | ||
| "name": "Liip", | ||
| "url": "https://www.liip.ch/" | ||
| }, | ||
| "repository": { | ||
| "type": "git", | ||
| "url": "git+https://github.com/liip/class-prefixer.git", | ||
| "directory": "packages/rollup-plugin-ast-transform" | ||
| }, | ||
| "publishConfig": { | ||
| "@liip:registry": "https://registry.npmjs.org/", | ||
| "access": "public" | ||
| }, | ||
| "main": "dist/plugin.js", | ||
| "files": [ | ||
| "/dist" | ||
| ], | ||
| "license": "MIT", | ||
| "scripts": { | ||
| "dev": "tsc -w -p ./tsconfig.build.json", | ||
| "build": "tsc -p ./tsconfig.build.json", | ||
| "lint": "eslint \"src/**/*.ts\"", | ||
| "lint:fix": "npm run lint -- --fix", | ||
| "format": "prettier '**/!(dist)/*.@(ts|json|md)' --check", | ||
| "format:fix": "npm run format -- --write", | ||
| "test": "NODE_ENV=test jest", | ||
| "typecheck": "tsc --noEmit" | ||
| }, | ||
| "dependencies": { | ||
| "@liip/ast-parsers": "^0.1.0", | ||
| "@rollup/pluginutils": "^5.1.0" | ||
| }, | ||
| "devDependencies": { | ||
| "@types/rollup": "^0.51.4" | ||
| } | ||
| } |
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