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fix(build): remove private fields (#3514)
* fix(build): remove private fields * chore: format scripts * test: add test code * reduce package.json diff * feat(build): add progress for removing private fields * feat: rename `scripts` to `build`
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| /// <reference types="vitest/globals" /> | ||
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| import { removePrivateFields } from './remove-private-fields' | ||
| import fs from 'node:fs/promises' | ||
| import path from 'node:path' | ||
| import os from 'node:os' | ||
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| describe('removePrivateFields', () => { | ||
| it('Works', async () => { | ||
| const tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), 'removePrivateFields')) | ||
| const tsPath = path.join(tmpDir, 'class.ts') | ||
| await fs.writeFile(tsPath, 'class X { #private: number = 0; a: number = 0 }') | ||
| expect(removePrivateFields(tsPath)).toBe(`class X { | ||
| a: number = 0; | ||
| } | ||
| `) | ||
| }) | ||
| it('Should throw error when path does not exist', () => { | ||
| expect(() => removePrivateFields('./unknown.ts')).toThrowError(Error) | ||
| }) | ||
| }) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| import * as ts from 'typescript' | ||
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| const removePrivateTransformer = <T extends ts.Node>(ctx: ts.TransformationContext) => { | ||
| const visit: ts.Visitor = (node) => { | ||
| if (ts.isClassDeclaration(node)) { | ||
| const newMembers = node.members.filter((elem) => { | ||
| if (ts.isPropertyDeclaration(elem) || ts.isMethodDeclaration(elem)) { | ||
| for (const modifier of elem.modifiers ?? []) { | ||
| if (modifier.kind === ts.SyntaxKind.PrivateKeyword) { | ||
| return false | ||
| } | ||
| } | ||
| } | ||
| if (elem.name && ts.isPrivateIdentifier(elem.name)) { | ||
| return false | ||
| } | ||
| return true | ||
| }) | ||
| return ts.factory.createClassDeclaration( | ||
| node.modifiers, | ||
| node.name, | ||
| node.typeParameters, | ||
| node.heritageClauses, | ||
| newMembers | ||
| ) | ||
| } | ||
| return ts.visitEachChild(node, visit, ctx) | ||
| } | ||
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|
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| return (node: T) => { | ||
| const visited = ts.visitNode(node, visit) | ||
| if (!visited) { | ||
| throw new Error('The result visited is undefined.') | ||
| } | ||
| return visited | ||
| } | ||
| } | ||
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| export const removePrivateFields = (tsPath: string) => { | ||
| const program = ts.createProgram([tsPath], { | ||
| target: ts.ScriptTarget.ESNext, | ||
| module: ts.ModuleKind.ESNext, | ||
| }) | ||
| const file = program.getSourceFile(tsPath) | ||
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| const transformed = ts.transform(file!, [removePrivateTransformer]) | ||
| const printer = ts.createPrinter() | ||
| const transformedSourceFile = transformed.transformed[0] as ts.SourceFile | ||
| const code = printer.printFile(transformedSourceFile) | ||
| transformed.dispose() | ||
| return code | ||
| } |
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