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// All other imports are lazy so that single tasks start up fast.
import {
existsSync,
promises,
readdirSync,
readFileSync,
writeFileSync,
} from 'fs';
import {parallel, series} from 'gulp';
import {dirname, join, resolve} from 'path';
import {gzipSync} from 'zlib';
const MODULES = [
'', // root module
...Object.keys(
JSON.parse(readFileSync('src/tsconfig.json', 'utf-8')).compilerOptions
.paths,
)
.filter((alias) => alias.startsWith('@synclets/@types/'))
.map((alias) => alias.replace('@synclets/@types/', '')),
];
const UTF8 = 'utf-8';
const DIST_DIR = 'dist';
const DOCS_DIR = 'docs';
const TMP_DIR = 'tmp';
const LINT_BLOCKS = /```[jt]sx?( [^\n]+)?(\n.*?)```/gms;
const TYPES_DOC_CODE_BLOCKS = /\/\/\/\s*(\S*)(.*?)(?=(\s*\/\/)|(\n\n)|(\n$))/gs;
const TYPES_DOC_BLOCKS = /(\/\*\*.*?\*\/)\s*\/\/\/\s*(\S*)/gs;
const EXTERNAL = [
'cloudflare:workers',
'fs/promises',
'path',
'@electric-sql/pglite',
'@electric-sql/pglite/template',
];
const MODULE_REPLACEMENTS = {};
const MIN_MODULE_REPLACEMENTS = {};
MODULES.forEach((module) => {
const fullModule = `synclets${module ? '/' : ''}${module}`;
const minModule = `synclets/min${module ? '/' : ''}${module}`;
EXTERNAL.push(fullModule, minModule);
const path = `@synclets${module ? '/' : ''}${module}`;
MODULE_REPLACEMENTS[path] = fullModule;
MIN_MODULE_REPLACEMENTS[path] = minModule;
});
const getPrettierConfig = async () => ({
...JSON.parse(await promises.readFile('.prettierrc', UTF8)),
parser: 'typescript',
});
const promiseAll = async (array, cb) => await Promise.all(array.map(cb));
const promiseAllModules = async (cb) => await promiseAll(MODULES, cb);
const clearDir = async (dir = DIST_DIR) => {
try {
await removeDir(dir);
} catch {}
await makeDir(dir);
};
const makeDir = async (dir) => {
try {
await promises.mkdir(dir);
} catch {}
};
const ensureDir = async (fileOrDirectory) => {
await promises.mkdir(dirname(fileOrDirectory), {recursive: true});
return fileOrDirectory;
};
const removeDir = async (dir) => {
await promises.rm(dir, {recursive: true});
};
const forEachDeepFile = (dir, callback, extension = '') =>
forEachDirAndFile(
dir,
(dir) => forEachDeepFile(dir, callback, extension),
(file) => callback(file),
extension,
);
const forEachDirAndFile = (dir, dirCallback, fileCallback, extension = '') =>
readdirSync(dir, {withFileTypes: true}).forEach((entry) => {
const path = resolve(join(dir, entry.name));
if (entry.isDirectory()) {
dirCallback?.(path);
} else if (path.endsWith(extension)) {
fileCallback?.(path);
}
});
const gzipFile = async (fileName) =>
await promises.writeFile(
`${fileName}.gz`,
gzipSync(await promises.readFile(fileName, UTF8), {level: 9}),
);
const copyPackageFiles = async (forProd = false) => {
const mins = forProd ? [null, 'min'] : [null];
const modules = forProd ? MODULES : MODULES;
const json = JSON.parse(await promises.readFile('package.json', UTF8));
delete json.private;
delete json.scripts;
delete json.devEngines;
delete json.devDependencies;
json.main = './index.js';
json.types = './@types/index.d.ts';
json.typesVersions = {'*': {}};
json.exports = {};
mins.forEach((min) => {
modules.forEach((module) => {
const path = [min, module].filter((part) => part).join('/');
const typesPath = ['.', '@types', module, 'index.d.']
.filter((part) => part)
.join('/');
const codePath = (path ? '/' : '') + path;
json.typesVersions['*'][path ? path : '.'] = [typesPath + 'ts'];
json.exports['.' + codePath] = {
default: {
types: typesPath + 'ts',
default: '.' + codePath + '/index.js',
},
};
});
});
await promises.writeFile(
join(DIST_DIR, 'package.json'),
JSON.stringify(json, undefined, 2),
UTF8,
);
await promises.copyFile('LICENSE', join(DIST_DIR, 'LICENSE'));
await promises.copyFile('readme.md', join(DIST_DIR, 'readme.md'));
await promises.copyFile('releases.md', join(DIST_DIR, 'releases.md'));
await promises.copyFile('site/guides/15_agents.md', 'agents.md');
await promises.copyFile('agents.md', join(DIST_DIR, 'agents.md'));
};
const getLabelBlocksByModule = async () => {
const labelBlocksByModule = new Map();
const labels = new Set();
await promiseAllModules(async (module) => {
const labelBlocksForModule = new Map();
[
...(
await promises.readFile(`src/@types/${module}/docs.js`, UTF8)
).matchAll(TYPES_DOC_BLOCKS),
].forEach(([_, block, label]) => {
if (labels.has(label)) {
throw new Error(`Duplicate label '${label}' in ${module}`);
}
labels.add(label);
labelBlocksForModule.set(label, block);
});
labelBlocksByModule.set(module, labelBlocksForModule);
});
return labelBlocksByModule;
};
const copyDefinition = async (dir, module, labelBlocksByModule) => {
const labelBlocksForModule = new Map(labelBlocksByModule.get(module));
const codeBlocks = new Map();
[
...(
await promises.readFile(`src/@types/${module}/index.d.ts`, UTF8)
).matchAll(TYPES_DOC_CODE_BLOCKS),
].forEach(([_, label, code]) => {
const prefix = code.match(/^\n\s*/m)?.[0];
if (prefix) {
codeBlocks.set(
label,
code
.replace(/export type \S+ =\s/, '')
.replace(/export function /, '')
.replaceAll(prefix, prefix + ' * '),
);
}
});
const fileRewrite = (block) =>
block.replace(TYPES_DOC_CODE_BLOCKS, (_, label, code) => {
if (labelBlocksForModule.has(label)) {
let block = labelBlocksForModule.get(label);
labelBlocksForModule.delete(label);
return block + code;
}
throw `Missing docs label ${label} in ${module}`;
});
const definitionFile = await ensureDir(`${dir}/@types/${module}/index.d.ts`);
await promises.writeFile(
definitionFile,
fileRewrite(
await promises.readFile(`src/@types/${module}/index.d.ts`, UTF8),
),
UTF8,
);
if (labelBlocksForModule.size > 0) {
throw `Unreferenced docs labels in ${module}: ${[
...labelBlocksForModule.keys(),
].join(', ')}`;
}
};
const copyDefinitions = async (dir) => {
const labelBlocksByModule = await getLabelBlocksByModule();
await promiseAllModules((module) =>
copyDefinition(dir, module, labelBlocksByModule),
);
};
const execute = async (cmd) => {
const {exec} = await import('child_process');
const {promisify} = await import('util');
try {
await promisify(exec)(cmd);
} catch (e) {
// eslint-disable-next-line no-console
console.error(e);
throw e.stdout;
}
};
const lintCheckFiles = async (dir) => {
const {default: prettier} = await import('prettier');
const prettierConfig = await getPrettierConfig();
const filePaths = [];
['.ts', '.tsx', '.js', '.d.ts'].forEach((extension) =>
forEachDeepFile(dir, (filePath) => filePaths.push(filePath), extension),
);
await promiseAll(filePaths, async (filePath) => {
const code = await promises.readFile(filePath, UTF8);
if (
!(await prettier.check(code, {...prettierConfig, filepath: filePath}))
) {
writeFileSync(
filePath,
await prettier.format(
code,
{...prettierConfig, filepath: filePath},
UTF8,
),
);
}
});
const {
default: {ESLint},
} = await import('eslint');
const esLint = new ESLint({});
const results = await esLint.lintFiles([dir]);
if (
results.filter((result) => result.errorCount > 0 || result.warningCount > 0)
.length > 0
) {
const formatter = await esLint.loadFormatter();
const errors = await formatter.format(results);
throw errors;
}
};
const lintCheckDocs = async (dir) => {
const {
default: {ESLint},
} = await import('eslint');
const esLint = new ESLint({
overrideConfig: {
rules: {
'no-console': 0,
'@typescript-eslint/no-unused-expressions': 0,
'max-len': [
2,
{code: 80, ignorePattern: '^(\\s+\\* )?((im|ex)ports?|// ->)\\W.*'},
],
},
},
});
const {default: prettier} = await import('prettier');
const prettierConfig = await getPrettierConfig();
const docConfig = {...prettierConfig, printWidth: 75};
const filePaths = [];
['.js', '.d.ts'].forEach((extension) =>
forEachDeepFile(dir, (filePath) => filePaths.push(filePath), extension),
);
await promiseAll(filePaths, async (filePath) => {
const code = await promises.readFile(filePath, UTF8);
await promiseAll(
[...(code.matchAll(LINT_BLOCKS) ?? [])],
async ([_, hint, docBlock]) => {
if (hint?.trim() == 'override') {
return; // can't lint orphaned TS methods
}
const code = docBlock.replace(/\n +\* ?/g, '\n').trimStart();
let pretty = code;
if (!(await prettier.check(code, docConfig))) {
pretty = await prettier.format(code, docConfig);
writeFileSync(
filePath,
readFileSync(filePath, UTF8).replace(
docBlock,
'\n' +
pretty
.trim()
.split('\n')
.map((line) => (line == '' ? ' *' : ' * ' + line))
.join('\n') +
'\n * ',
),
UTF8,
);
}
const results = await esLint.lintText(pretty);
if (
results.filter(
(result) => result.errorCount > 0 || result.warningCount > 0,
).length > 0
) {
const formatter = await esLint.loadFormatter();
const errors = await formatter.format(results);
throw `${filePath} does not lint:\n${pretty}\n\n${errors}`;
}
},
);
});
};
const spellCheck = async (dir, deep = false) =>
await execute(`cspell "${dir}/*${deep ? '*' : ''}"`);
const getTsOptions = async (dir) => {
const {default: tsc} = await import('typescript');
return tsc.parseJsonSourceFileConfigFileContent(
tsc.readJsonConfigFile(`${dir}/tsconfig.json`, tsc.sys.readFile),
tsc.sys,
dir,
);
};
const tsCheck = async (dir) => {
const path = await import('path');
const {default: tsc} = await import('typescript');
const {analyzeTsConfig} = await import('ts-unused-exports');
const {fileNames, options} = await getTsOptions(dir);
const results = tsc
.getPreEmitDiagnostics(
tsc.createProgram(
fileNames.filter(
(fileName) => !fileName.startsWith('test/unit/core/types'),
),
options,
),
)
.filter((result) => !result.file?.fileName.includes('/node_modules/'));
if (results.length > 0) {
const resultText = results
.map((result) => {
const {file, messageText, start} = result;
const {line, character} = file.getLineAndCharacterOfPosition(start);
return `${file.fileName}:${line}:${character}\n${JSON.stringify(
messageText,
)}`;
})
.join('\n\n');
throw resultText;
}
const unusedResults = Object.entries(
analyzeTsConfig(`${path.resolve(dir)}/tsconfig.json`, [
'--excludeDeclarationFiles',
'--excludePathsFromReport=' +
'server.mjs;build.ts;' +
MODULES.map((module) => `${module}.ts`).join(';'),
]).unusedExports,
)
.map(
([file, exps]) =>
`${file}: ${exps.map((exp) => exp.exportName).join(', ')}`,
)
.join('\n');
if (unusedResults != '') {
throw `Unused exports for ${dir} in: \n${unusedResults}`;
}
};
const compileModule = async (module, dir = DIST_DIR, min = false) => {
const {default: esbuild} = await import('rollup-plugin-esbuild');
const {rollup} = await import('rollup');
const {default: replace} = await import('@rollup/plugin-replace');
const {default: prettierPlugin} = await import('rollup-plugin-prettier');
const {default: shebang} = await import('rollup-plugin-preserve-shebang');
const {default: image} = await import('@rollup/plugin-image');
const {default: terser} = await import('@rollup/plugin-terser');
let inputFile = `src/${module}/index.ts`;
if (!existsSync(inputFile)) {
inputFile += 'x';
}
const inputConfig = {
input: inputFile,
external: EXTERNAL,
plugins: [
esbuild({
target: 'esnext',
legalComments: 'inline',
jsx: 'automatic',
}),
replace({
'/*!': '\n/*',
delimiters: ['', ''],
preventAssignment: true,
...(min ? MIN_MODULE_REPLACEMENTS : MODULE_REPLACEMENTS),
}),
shebang(),
image(),
...(min
? [
replace({
'': ' ',
delimiters: ['\\s+', ''],
preventAssignment: true,
}),
terser({
toplevel: true,
compress: {unsafe: true, passes: 3},
}),
]
: [prettierPlugin(await getPrettierConfig())]),
],
onwarn: (warning, warn) => {
if (warning.code !== 'MISSING_NODE_BUILTINS') {
warn(warning);
}
},
};
const moduleDir = dirname(await ensureDir(dir + '/' + module + '/-'));
const index = 'index.js';
const outputConfig = {
dir: moduleDir,
entryFileNames: index,
format: 'esm',
interop: 'default',
};
await (await rollup(inputConfig)).write(outputConfig);
if (min) {
await gzipFile(join(moduleDir, index));
}
};
const test = async (dirs, coverage) => {
const {startVitest} = await import('vitest/node');
await clearDir(TMP_DIR);
const vitest = await startVitest(
'test',
[...dirs],
{watch: false, coverage: {enabled: coverage}},
{},
{watch: false},
);
await vitest.close();
if (vitest.state.getCountOfFailedTests() > 0) {
await removeDir(TMP_DIR);
throw 'Test failed';
}
if (coverage) {
await promises.writeFile(
'coverage.json',
JSON.stringify({
...JSON.parse(await promises.readFile('./tmp/counts.json')),
...JSON.parse(
await promises.readFile('./tmp/coverage/coverage-summary.json'),
).total,
}),
UTF8,
);
}
};
const compileModulesForProd = async () => {
await clearDir(DIST_DIR);
await copyPackageFiles(true);
await copyDefinitions(DIST_DIR);
await promiseAllModules(async (module) => {
await compileModule(module, `${DIST_DIR}/`);
await compileModule(module, `${DIST_DIR}/min`, true);
});
};
const compileDocsAndAssets = async (api = true, pages = true) => {
const {default: esbuild} = await import('esbuild');
await makeDir(TMP_DIR);
await esbuild.build({
entryPoints: ['site/build.ts'],
external: ['tinydocs', 'react', '@prettier/sync'],
target: 'esnext',
bundle: true,
outfile: './tmp/build.js',
format: 'esm',
platform: 'node',
});
// eslint-disable-next-line import/no-unresolved
const {build} = await import('./tmp/build.js');
await build(DOCS_DIR, api, pages, MODULES);
await removeDir(TMP_DIR);
};
const npmInstall = async () => {
const {exec} = await import('child_process');
const {promisify} = await import('util');
return await promisify(exec)('npm install --legacy-peer-deps');
};
const npmPublish = async () => {
const {exec} = await import('child_process');
const {promisify} = await import('util');
return await promisify(exec)('npm publish');
};
// --
export const preparePackage = copyPackageFiles;
export const compileForTest = async () => {
await clearDir(DIST_DIR);
await copyPackageFiles();
await copyDefinitions(DIST_DIR);
await promiseAllModules(async (module) => {
await compileModule(module, DIST_DIR);
});
};
export const lintFiles = async () => {
await lintCheckFiles('src');
await lintCheckFiles('test');
await lintCheckFiles('site');
};
export const lintDocs = async () => await lintCheckDocs('src');
export const lint = series(lintDocs, lintFiles);
export const spell = async () => {
await spellCheck('.');
await spellCheck('src', true);
await spellCheck('test', true);
await spellCheck('site', true);
};
export const ts = async () => {
await tsCheck('src');
await tsCheck('test');
await tsCheck('site');
};
export const compileForProd = async () => await compileModulesForProd();
export const testUnit = async () => {
await test(['test/unit'], true);
};
export const testUnitFast = async () => {
await test(['test/unit/core']);
};
export const compileAndTestUnit = series(compileForTest, testUnit);
export const compileAndTestUnitFast = series(compileForTest, testUnitFast);
export const testPerf = async () => {
// await test(['test/perf']);
};
export const compileAndTestPerf = series(compileForTest, testPerf);
export const compileDocsPagesOnly = async () =>
await compileDocsAndAssets(false);
export const compileDocsAssetsOnly = async () =>
await compileDocsAndAssets(false, false);
export const compileDocs = async () => await compileDocsAndAssets();
export const compileForProdAndDocs = series(compileForProd, compileDocs);
export const testE2e = async () => {
// await test(['test/e2e'], {puppeteer: true});
};
export const compileAndTestE2e = series(compileForProdAndDocs, testE2e);
export const testDurableObject = async () =>
await test(['test/unit/durable-object']);
export const compileAndTestDurableObject = series(
compileForTest,
testDurableObject,
);
export const testProd = async () => {
await execute('attw --pack dist --format table-flipped --profile esm-only');
await test(['test/prod']);
};
export const compileAndTestProd = series(compileForProdAndDocs, testProd);
export const serveDocs = async () => {
const {createTestServer} = await import('./test/server.mjs');
createTestServer(DOCS_DIR, '8082');
};
export const preCommit = series(
parallel(lint, spell, ts),
compileForTest,
testUnit,
compileForProd,
);
export const prePublishPackage = series(
npmInstall,
compileForTest,
parallel(lint, spell, ts),
testUnit,
testDurableObject,
testPerf,
compileForProd,
testProd,
compileDocs,
testE2e,
);
export const publishPackage = series(prePublishPackage, npmPublish);