# `sfmc/ssjs-require-platform-load`

> Require `Platform.Load("core", ...)` before using Core library objects.

| | |
|---|---|
| **Type** | `problem` |
| **Default severity** | `error` in `recommended` and `strict` |
| **Fixable** | **Auto-fix** (`eslint --fix`) |

## Why This Rule Exists

SFMC's SSJS runtime requires `Platform.Load("core", "1.1.5")` to be called before any Core library object (`DataExtension`, `Subscriber`, `Email`, `SFMC`, etc.) is used. Without it, calls to `DataExtension.Init()` and similar methods crash at runtime with an object-not-found error. The Platform.Load call initialises the Core library and makes its classes available.

## Settings

| Setting | Values | Default |
|---------|--------|---------|
| severity | `"error"` \| `"warn"` \| `"off"` | `"error"` |

This rule has no configuration options.

### Examples

**Not allowed:**

```js
var de = DataExtension.Init("MyDE");
var rows = de.Rows.Retrieve();
```

**Allowed:**

```js
Platform.Load("core", "1.1.5");
var de = DataExtension.Init("MyDE");
var rows = de.Rows.Retrieve();
```

## Fix

This rule provides an **auto-fix**. Applied by:

- `eslint --fix` on the command line (applies ALL fixable rules regardless of `meta.type`; use `--fix-type problem` to target only problem-type rules)
- **Fix this issue** / **Fix all auto-fixable problems** in VS Code (requires the [ESLint extension](https://marketplace.visualstudio.com/items?itemName=dbaeumer.vscode-eslint))
- On save via `editor.codeActionsOnSave: { "source.fixAll.eslint": "explicit" }`

What the fix does: inserts `Platform.Load("core", "1.1.5");` at the very beginning of the file. The fix is attached to the first reported violation only, so it is inserted exactly once even when multiple Core objects are used.

## When to Disable

Only disable this rule if you are intentionally writing SSJS that does not use Core library objects.

```js
// eslint.config.js
rules: { 'sfmc/ssjs-require-platform-load': 'off' }
```