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fix(jsx-email): fix email check + --use-preview-props #389

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e1abc1a
chore: remove smoke test, it's broken
shellscape Dec 9, 2025
5ab4944
fix(jsx-email,test-cli): add --use-preview-props to email check
CharlieHelps Dec 10, 2025
c43c858
test(jsx-email): stabilize config snapshots
CharlieHelps Dec 10, 2025
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45 changes: 0 additions & 45 deletions .github/workflows/test-smoke.yml
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27 changes: 20 additions & 7 deletions packages/jsx-email/src/cli/commands/check.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@ import { type IssueGroup, caniemail, groupIssues, sortIssues } from 'caniemail';
import chalk from 'chalk';
import chalkTmpl from 'chalk-template';
import stripAnsi from 'strip-ansi';
import { type InferOutput as Infer, parse as assert, object } from 'valibot';
import { type InferOutput as Infer, parse as assert, boolean, object, optional } from 'valibot';

import { formatBytes, gmailByteLimit, gmailBytesSafe } from '../helpers.js';

Expand All @@ -13,7 +13,9 @@ import { type CommandFn } from './types.js';

const { error, log } = console;

const CheckOptionsStruct = object({});
const CheckOptionsStruct = object({
usePreviewProps: optional(boolean())
});

type CheckOptions = Infer<typeof CheckOptionsStruct>;

Expand All @@ -32,17 +34,24 @@ export const help = chalkTmpl`
Check jsx-email templates for client compatibility

{underline Usage}
$ email check <template file name>
$ email check <template file name> [...options]

{underline Options}
--use-preview-props
When set, use the \`previewProps\` exported by the template file (if present).

{underline Examples}
$ email check ./emails/Batman.tsx
$ email check ./emails/Batman.tsx --use-preview-props
`;

const formatNotes = (notes: string[], indent: string) => {
if (!notes.length) return '';
const noteLines = (notes as string[]).join(`\n${'.'.repeat(indent.length)}**`);
console.log({ noteLines });
return chalkTmpl`\n${indent}{cyan Notes}:\n${'.'.repeat(indent.length)}asshole\n`;

const noteIndent = `${indent} `;
const noteLines = notes.map((note) => `${noteIndent}${chalk.dim(note)}`).join('\n');

Comment on lines 48 to +53
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@charliecreates charliecreates bot Dec 10, 2025

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formatIssue() dereferences position with non-null assertions (position!.start...). If caniemail ever yields an issue without position, email check will crash while formatting output (i.e., during reporting, not during parsing). Given this is a CLI command, it’s better to degrade gracefully (e.g., show ?:?) than throw.

Also, formatNotes() now returns a plain string while most other formatting uses chalkTmpl; this is fine, but consider keeping the formatting approach consistent so future changes don’t accidentally double-escape/strip ANSI.

Suggestion

Guard the position access and format a fallback location when it’s missing. For example:

const loc = position
  ? chalkTmpl`{dim ${position.start.line}:${position.start.column}}`
  : chalk.dim('?:?');

and use loc in the formatted line instead of position!.….

Reply with "@CharlieHelps yes please" if you’d like me to add a commit with this change.

return `\n${indent}${chalk.cyan('Notes')}:\n${noteLines}`;
};

const formatIssue = (group: IssueGroup): string => {
Expand Down Expand Up @@ -129,7 +138,11 @@ export const command: CommandFn = async (argv: CheckOptions, input) => {
log(chalkTmpl`{blue Checking email template for Client Compatibility...}\n`);

const [file] = await buildTemplates({
buildOptions: { showStats: false, writeToFile: false },
buildOptions: {
showStats: false,
usePreviewProps: argv.usePreviewProps,
writeToFile: false
},
targetPath: input[0]
});

Expand Down
36 changes: 34 additions & 2 deletions packages/jsx-email/test/config/define-config.test.ts
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Original file line number Diff line number Diff line change
@@ -1,12 +1,40 @@
import { defineConfig } from '../../src/config.js';
import { pluginSymbol } from '../../src/plugins.js';
import { createRequire } from 'node:module';
import { dirname } from 'node:path';

import loglevelnext from 'loglevelnext';

const require = createRequire(import.meta.url);

describe('defineConfig', async () => {
beforeEach(() => {
vi.restoreAllMocks();
vi.resetModules();

process.env.FORCE_COLOR = '1';

const dotLogPath = require.resolve('@dot/log');
const chalkPath = require.resolve('chalk', { paths: [dirname(dotLogPath)] });

delete require.cache[dotLogPath];
delete require.cache[chalkPath];
require(chalkPath).level = 1;

delete (globalThis as any)[Symbol.for('jsx-email/global/config')];
delete process.env.DOT_LOG_LEVEL;

for (const key of Object.keys(loglevelnext.loggers)) {
if (key === 'default') continue;
delete loglevelnext.loggers[key];
}
});

test('defaults', async () => {
const { defineConfig } = await import('../../src/config.js');
expect(await defineConfig({})).toMatchSnapshot();
});

test('basic set', async () => {
const { defineConfig } = await import('../../src/config.js');
const config = await defineConfig({
render: {
minify: true
Expand All @@ -16,6 +44,7 @@ describe('defineConfig', async () => {
});

test('minify and pretty', async () => {
const { defineConfig } = await import('../../src/config.js');
const config = await defineConfig({
render: {
minify: true,
Expand All @@ -26,6 +55,7 @@ describe('defineConfig', async () => {
});

test('plain', async () => {
const { defineConfig } = await import('../../src/config.js');
const config = await defineConfig({
render: {
minify: true,
Expand All @@ -37,6 +67,8 @@ describe('defineConfig', async () => {
});

test('de-dupe plugins', async () => {
const { defineConfig } = await import('../../src/config.js');
const { pluginSymbol } = await import('../../src/plugins.js');
const plugin = { name: 'batman', symbol: pluginSymbol };
const config = await defineConfig({
plugins: [plugin as any, plugin]
Expand Down
30 changes: 29 additions & 1 deletion packages/jsx-email/test/config/load/dotdir/load-dotdir.test.ts
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@@ -1,7 +1,35 @@
import { loadConfig } from '../../../../src/config.js';
import { createRequire } from 'node:module';
import { dirname } from 'node:path';

import loglevelnext from 'loglevelnext';

const require = createRequire(import.meta.url);

describe('loadConfig → dotdir', async () => {
beforeEach(() => {
vi.restoreAllMocks();
vi.resetModules();

process.env.FORCE_COLOR = '1';

const dotLogPath = require.resolve('@dot/log');
const chalkPath = require.resolve('chalk', { paths: [dirname(dotLogPath)] });

delete require.cache[dotLogPath];
delete require.cache[chalkPath];
require(chalkPath).level = 1;

delete (globalThis as any)[Symbol.for('jsx-email/global/config')];
delete process.env.DOT_LOG_LEVEL;

for (const key of Object.keys(loglevelnext.loggers)) {
if (key === 'default') continue;
delete loglevelnext.loggers[key];
}
});

test('loadConfig', async () => {
const { loadConfig } = await import('../../../../src/config.js');
const config = await loadConfig(__dirname);
expect(config).toMatchSnapshot();
});
Expand Down
30 changes: 29 additions & 1 deletion packages/jsx-email/test/config/load/mjs-json/load-mjs-json.test.ts
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Original file line number Diff line number Diff line change
@@ -1,7 +1,35 @@
import { loadConfig } from '../../../../src/config.js';
import { createRequire } from 'node:module';
import { dirname } from 'node:path';

import loglevelnext from 'loglevelnext';

const require = createRequire(import.meta.url);

describe('loadConfig → mjs-json', async () => {
beforeEach(() => {
vi.restoreAllMocks();
vi.resetModules();

process.env.FORCE_COLOR = '1';

const dotLogPath = require.resolve('@dot/log');
const chalkPath = require.resolve('chalk', { paths: [dirname(dotLogPath)] });

delete require.cache[dotLogPath];
delete require.cache[chalkPath];
require(chalkPath).level = 1;

delete (globalThis as any)[Symbol.for('jsx-email/global/config')];
delete process.env.DOT_LOG_LEVEL;

for (const key of Object.keys(loglevelnext.loggers)) {
if (key === 'default') continue;
delete loglevelnext.loggers[key];
}
});

test('loadConfig', async () => {
const { loadConfig } = await import('../../../../src/config.js');
const config = await loadConfig(__dirname);
expect(config).toMatchSnapshot();
});
Expand Down
30 changes: 29 additions & 1 deletion packages/jsx-email/test/config/load/mjs/load-mjs.test.ts
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Original file line number Diff line number Diff line change
@@ -1,7 +1,35 @@
import { loadConfig } from '../../../../src/config.js';
import { createRequire } from 'node:module';
import { dirname } from 'node:path';

import loglevelnext from 'loglevelnext';

const require = createRequire(import.meta.url);

describe('loadConfig → mjs', async () => {
beforeEach(() => {
vi.restoreAllMocks();
vi.resetModules();

process.env.FORCE_COLOR = '1';

const dotLogPath = require.resolve('@dot/log');
const chalkPath = require.resolve('chalk', { paths: [dirname(dotLogPath)] });

delete require.cache[dotLogPath];
delete require.cache[chalkPath];
require(chalkPath).level = 1;

delete (globalThis as any)[Symbol.for('jsx-email/global/config')];
delete process.env.DOT_LOG_LEVEL;

for (const key of Object.keys(loglevelnext.loggers)) {
if (key === 'default') continue;
delete loglevelnext.loggers[key];
}
});
Comment on lines +9 to +29
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@charliecreates charliecreates bot Dec 10, 2025

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There’s substantial repeated beforeEach setup across multiple config tests to reset chalk/loggers/global config. This repetition makes it easy for suites to drift (one file changes, others don’t) and is hard to maintain. Centralizing this into a shared helper (or a single setup module imported by these tests) would keep the stabilization logic consistent and reduce copy/paste risk.

Suggestion

Extract the repeated stabilization logic into a shared helper used by all config tests.

Example:

// test/helpers/reset-config-test-env.ts
export function resetConfigTestEnv() {
  vi.restoreAllMocks();
  vi.resetModules();
  process.env.FORCE_COLOR = '1';
  // …chalk/@dot/log cache reset…
  // …global config + loglevelnext loggers reset…
}

Then in each test file:

import { resetConfigTestEnv } from '../helpers/reset-config-test-env';
beforeEach(resetConfigTestEnv);

Reply with "@CharlieHelps yes please" if you'd like me to add a commit with this suggestion.


test('loadConfig', async () => {
const { loadConfig } = await import('../../../../src/config.js');
const config = await loadConfig(__dirname);
expect(config).toMatchSnapshot();
});
Expand Down
30 changes: 29 additions & 1 deletion packages/jsx-email/test/config/load/parent-dir/child-dir/parent-dir.test.ts
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Original file line number Diff line number Diff line change
@@ -1,7 +1,35 @@
import { loadConfig } from '../../../../../src/config.js';
import { createRequire } from 'node:module';
import { dirname } from 'node:path';

import loglevelnext from 'loglevelnext';

const require = createRequire(import.meta.url);

describe('loadConfig → parent dir', async () => {
beforeEach(() => {
vi.restoreAllMocks();
vi.resetModules();

process.env.FORCE_COLOR = '1';

const dotLogPath = require.resolve('@dot/log');
const chalkPath = require.resolve('chalk', { paths: [dirname(dotLogPath)] });

delete require.cache[dotLogPath];
delete require.cache[chalkPath];
require(chalkPath).level = 1;

delete (globalThis as any)[Symbol.for('jsx-email/global/config')];
delete process.env.DOT_LOG_LEVEL;

for (const key of Object.keys(loglevelnext.loggers)) {
if (key === 'default') continue;
delete loglevelnext.loggers[key];
}
});

test('loadConfig', async () => {
const { loadConfig } = await import('../../../../../src/config.js');
const config = await loadConfig(__dirname);
expect(config).toBeDefined();
expect(config).toMatchSnapshot();
Expand Down
31 changes: 31 additions & 0 deletions test/cli/check.test.ts
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@@ -0,0 +1,31 @@
import { resolve } from 'node:path';

import { execa } from 'execa';
import strip from 'strip-ansi';
import { describe, expect, test } from 'vitest';

process.chdir(__dirname);

describe('cli', async () => {
test('email check supports --use-preview-props', async () => {
const templatePath = resolve(__dirname, './fixtures/check-preview-props.tsx');

await expect(
execa({ cwd: __dirname, shell: true })`email check ${templatePath}`
).rejects.toMatchObject({
exitCode: 1
});

const { stdout } = await execa({
cwd: __dirname,
shell: true
})`email check ${templatePath} --use-preview-props`;
Comment on lines +13 to +22
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@charliecreates charliecreates bot Dec 10, 2025

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The new test uses shell: true with a template path interpolated into the command. Even though this is “just tests”, it introduces needless platform quirks (quoting/escaping spaces on Windows) and a command-injection footgun if paths ever come from variables that may include special characters. execa supports passing args without shell—this is more reliable and portable.

Suggestion

Avoid shell: true and pass args as an array to make the test more robust across platforms.

await expect(execa('email', ['check', templatePath], { cwd: __dirname }))
  .rejects.toMatchObject({ exitCode: 1 });

const { stdout } = await execa('email', ['check', templatePath, '--use-preview-props'], {
  cwd: __dirname,
});

Reply with "@CharlieHelps yes please" if you'd like me to add a commit with this suggestion.

Comment on lines +7 to +22
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@charliecreates charliecreates bot Dec 10, 2025

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This CLI test relies on shell: true and interpolates a file path into a shell command. While the path is test-controlled, using the shell can introduce quoting/escaping issues on Windows (spaces, special characters) and can also make the test environment-dependent.

It also depends on process.chdir(__dirname) at module load, which can cause cross-test interference if more CLI tests are added later.

Suggestion

Prefer running the CLI without a shell and avoid global chdir. For example:

const cwd = __dirname;
await expect(execa('email', ['check', templatePath], { cwd }))
  .rejects.toMatchObject({ exitCode: 1 });

const { stdout } = await execa('email', ['check', templatePath, '--use-preview-props'], { cwd });

and remove process.chdir(__dirname).

Reply with "@CharlieHelps yes please" if you’d like me to add a commit with this change.


const plain = strip(stdout);

expect(plain).toContain('Checking email template for Client Compatibility');
expect(plain).toContain('Check Complete');
expect(plain).not.toContain('noteLines');
expect(plain).not.toContain('asshole');
});
});
9 changes: 9 additions & 0 deletions test/cli/fixtures/check-preview-props.tsx
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Original file line number Diff line number Diff line change
@@ -0,0 +1,9 @@
interface PreviewProps {
label: string;
}

export const previewProps: PreviewProps = {
label: 'Preview props loaded'
};

export const Template = ({ label }: PreviewProps) => <div>{label.toUpperCase()}</div>;
6 changes: 6 additions & 0 deletions test/cli/moon.yml
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Expand Up @@ -9,6 +9,12 @@ tasks:
# Naming this differently so it's not picked up bu the main test workflow
test.run:
command: vitest --config ../../shared/vitest.config.ts . --pool=forks
deps:
- plugin-inline:build
- plugin-minify:build
- plugin-pretty:build
- create-mail:build
- jsx-email:build
inputs:
- ./**/*.test.ts
- package.json
Expand Down
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