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build: parse compatibility exports structurally

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vorotamoroz
2026-07-30 11:46:52 +00:00
parent 5aad2623a1
commit 725b5eb9a0
2 changed files with 21 additions and 18 deletions
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scripts/generate-type-resolution-compat.mjs
+9 -18
View File
@@ -14,6 +14,7 @@ import {
} from "node:fs/promises";
import path from "node:path";
import { fileURLToPath } from "node:url";
import ts from "typescript";
const COMMONLIB_PACKAGE_NAME = "@vrtmrz/livesync-commonlib";
const PACKAGE_DEFINITIONS = [
@@ -30,10 +31,7 @@ const PROJECT_ROOT = path.resolve(path.dirname(fileURLToPath(import.meta.url)),
const DEFAULT_OUTPUT_ROOT = path.join(PROJECT_ROOT, "dist", "type-resolution-compat");
const DECLARATION_PATTERN = /\.d\.(?:c|m)?ts$/u;
const DECLARATION_MAP_PATTERN = /\.d\.(?:c|m)?ts\.map$/u;
const DIRECT_DEFAULT_EXPORT_PATTERN = /\bexport\s+(?:default\b|=)/u;
const DEFAULT_NAMESPACE_EXPORT_PATTERN = /\bexport\s*\*\s*as\s+default\b/u;
const EXACT_VERSION_PATTERN = /^\d+\.\d+\.\d+(?:[-+][0-9A-Za-z.-]+)?$/u;
const EXPORT_CLAUSE_PATTERN = /\bexport\s*\{([^}]*)\}/gu;
const SUPPRESSION_PATTERN = /@ts-(?:expect-error|ignore|nocheck)|eslint-(?:disable|enable)/u;
function fail(message) {
@@ -285,21 +283,14 @@ async function collectDeclarationFiles(packageRoot) {
}
function hasDefaultExport(source) {
if (DIRECT_DEFAULT_EXPORT_PATTERN.test(source) || DEFAULT_NAMESPACE_EXPORT_PATTERN.test(source)) return true;
for (const match of source.matchAll(EXPORT_CLAUSE_PATTERN)) {
for (const rawSpecifier of match[1].split(",")) {
const specifier = rawSpecifier.trim().replace(/^type\s+/u, "");
if (
specifier === "default" ||
specifier === '"default"' ||
specifier === "'default'" ||
/\bas\s+(?:default|"default"|'default')$/u.test(specifier)
) {
return true;
}
}
}
return false;
const sourceFile = ts.createSourceFile("types.d.ts", source, ts.ScriptTarget.Latest, false, ts.ScriptKind.TS);
return sourceFile.statements.some((statement) => {
if (ts.isExportAssignment(statement)) return true;
if (statement.modifiers?.some((modifier) => modifier.kind === ts.SyntaxKind.DefaultKeyword)) return true;
if (!ts.isExportDeclaration(statement) || statement.exportClause === undefined) return false;
if (ts.isNamespaceExport(statement.exportClause)) return statement.exportClause.name.text === "default";
return statement.exportClause.elements.some((specifier) => specifier.name.text === "default");
});
}
async function validateWrapperExports(packageRoot, typedExports) {
test/type-resolution-compat/generator.test.ts
+12
View File
@@ -367,6 +367,18 @@ Deno.test("generator rejects invalid package boundaries and preserves the previo
);
}
await writeSyntheticPackage(packageRoot, validSyntheticExports(), {
"dist/common/types.d.ts": "export type FilePath = string;\n",
"dist/index.d.ts":
"/** This package does not `export default`; the phrase is documentation only. */\n" +
'export type { FilePath } from "./common/types.js";\n',
});
const documentedDefaultExport = await runGenerator(repositoryRoot, commonArguments);
assert(
documentedDefaultExport.success,
`default-export text in a comment was rejected:\n${documentedDefaultExport.stderr}`
);
await writeSyntheticPackage(
packageRoot,
validSyntheticExports(),