Check out the original file to see the original source.

Not calling eval

It won’t change or eval an unrecognized language.

```python
raise Exception("...")
```

raise Exception("...")

It won’t change or eval a block that’s not being evaluated.

```ts
throw new Error("...");
```

throw new Error("...");

Calling eval

Eval blocks can be meta. These tests make extensive use of this feature.

```ts eval --meta
// some code
```

// some code

It evaluates a block of code from a recognized language that calls eval.

```ts eval --meta
const nothing = (_arg: number) => void 0;
```

const nothing = (_arg: number) => void 0;

It prints inlay hints

```ts eval --meta --out=hide
const nothing2 = () => nothing(123);
nothing2();
```

const nothing2 = () => nothing(/* _arg: */ 123);
nothing2();

It captures values from the evaluated code, that will be printed in the generated markdown.

```ts eval --meta
const add1 = (it: number) => it + 1;
add1(3);
```

const add1 = (it: number) => it + 1;
add1(/* it: */ 3);

4

By default, values print as json.

({ a: 1 });

{ "a": 1 }

The output language can be overridden

```ts eval --out=jsonjs --meta
({
    a: 1,
});
```

({ a: 1 });

{ a: 1 }

The fenced code block can be hidden

```ts eval --meta --hide
({ hide: "me", n: 123 + 456 });
```

{ "hide": "me", "n": 579 }

The output can be hidden

```ts eval --meta --out=hide
({ hide: "me", n: 123 + 456 });
```

({ hide: "me", n: 123 + 456 });

It doesn’t delete comments

// @ts-expect-error
1 + false;

1

This document used eval-md