| 1 | import * as fs from "node:fs/promises"; |
| 2 | import * as path from "node:path"; |
| 3 | import * as ts from "typescript-api/unstable/ast"; |
| 4 | import { createSyntaxProject } from "./typescript-source.ts"; |
| 5 | |
| 6 | /** Insert only the missing type argument/import, preserving comments and formatting. */ |
| 7 | export function migrateBindingPolicies( |
| 8 | sourceFile: ts.SourceFile, |
| 9 | providersPath: string, |
| 10 | ): string { |
| 11 | const filename = sourceFile.fileName; |
| 12 | let source = sourceFile.text; |
| 13 | const insertions: { offset: number; text: string }[] = []; |
| 14 | const visit = (node: ts.Node) => { |
| 15 | if ( |
| 16 | ts.isCallExpression(node) && |
| 17 | ts.isPropertyAccessExpression(node.expression) |
| 18 | ) { |
| 19 | const callee = node.expression; |
| 20 | if ( |
| 21 | callee.name.text === "Policy" && |
| 22 | ts.isIdentifier(callee.expression) && |
| 23 | callee.expression.text === "Binding" && |
| 24 | node.typeArguments?.length === 2 |
| 25 | ) { |
| 26 | // Keep an existing trailing comma/comment intact. |
| 27 | insertions.push({ |
| 28 | offset: node.typeArguments[1]!.end, |
| 29 | text: ", Providers", |
| 30 | }); |
| 31 | } |
| 32 | } |
| 33 | node.forEachChild(visit); |
| 34 | }; |
| 35 | sourceFile.forEachChild(visit); |
| 36 | if (!insertions.length) return source; |
| 37 | |
| 38 | const imports = sourceFile.statements.filter(ts.isImportDeclaration); |
| 39 | const alreadyImported = imports.some((node) => { |
| 40 | const bindings = node.importClause?.namedBindings; |
| 41 | return ( |
| 42 | bindings && |
| 43 | ts.isNamedImports(bindings) && |
| 44 | bindings.elements.some((specifier) => specifier.name.text === "Providers") |
| 45 | ); |
| 46 | }); |
| 47 | if (!alreadyImported) { |
| 48 | let relative = path |
| 49 | .relative(path.dirname(filename), providersPath) |
| 50 | .split(path.sep) |
| 51 | .join("/"); |
| 52 | if (!relative.startsWith(".")) relative = `./${relative}`; |
| 53 | const newline = source.includes("\r\n") ? "\r\n" : "\n"; |
| 54 | const lastImport = imports.at(-1); |
| 55 | const offset = |
| 56 | lastImport?.end ?? (source.startsWith("#!") ? source.indexOf("\n") : 0); |
| 57 | insertions.push({ |
| 58 | offset, |
| 59 | text: `${offset ? newline : ""}import type { Providers } from ${JSON.stringify(relative)};${offset ? "" : newline}`, |
| 60 | }); |
| 61 | } |
| 62 | for (const insertion of insertions.sort((a, b) => b.offset - a.offset)) { |
| 63 | source = |
| 64 | source.slice(0, insertion.offset) + |
| 65 | insertion.text + |
| 66 | source.slice(insertion.offset); |
| 67 | } |
| 68 | return source; |
| 69 | } |
| 70 | |
| 71 | async function main() { |
| 72 | const provider = process.argv[2] ?? "AWS"; |
| 73 | const srcRoot = path.join( |
| 74 | import.meta.dir, |
| 75 | "../packages/alchemy/src", |
| 76 | provider, |
| 77 | ); |
| 78 | const providersPath = path.join(srcRoot, "Providers.ts"); |
| 79 | const changed: string[] = []; |
| 80 | const files = (await fs.readdir(srcRoot, { recursive: true })) |
| 81 | .sort() |
| 82 | .filter((relative) => relative.endsWith(".ts")) |
| 83 | .map((relative) => path.join(srcRoot, relative)) |
| 84 | .filter((filename) => filename !== providersPath); |
| 85 | await using syntax = await createSyntaxProject(files); |
| 86 | for (const filename of files) { |
| 87 | const sourceFile = await syntax.project.program.getSourceFile(filename); |
| 88 | if (!sourceFile) throw new Error(`Missing source file ${filename}`); |
| 89 | const source = sourceFile.text; |
| 90 | const migrated = migrateBindingPolicies(sourceFile, providersPath); |
| 91 | if (migrated === source) continue; |
| 92 | await fs.writeFile(filename, migrated); |
| 93 | changed.push(path.relative(process.cwd(), filename)); |
| 94 | } |
| 95 | console.log(`Modified ${changed.length} file(s):`); |
| 96 | for (const file of changed.sort()) console.log(` ${file}`); |
| 97 | } |
| 98 | |
| 99 | if (import.meta.main) await main(); |