Mon-entreprise Calcul Library

https://mon-entreprise.urssaf.fr/intégration/
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The Mon-entreprise Calcul Library allows developers to reuse calculations from mon-entreprise...
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### Installer publicodes et modele-social

Source: https://mon-entreprise.urssaf.fr/int%C3%A9gration/biblioth%C3%A8que-de-calcul

Installez les paquets nécessaires pour utiliser l'interpréteur publicodes et les règles des simulateurs mon-entreprise.

```bash
npm install --save publicodes modele-social
```

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### Lancer un calcul brut / net avec publicodes

Source: https://mon-entreprise.urssaf.fr/int%C3%A9gration/biblioth%C3%A8que-de-calcul

Paramétrez le moteur publicodes avec les règles de modele-social et utilisez la fonction 'evaluate' pour calculer la valeur d'une règle spécifique, comme le salaire net à partir du salaire brut.

```javascript
import Engine from "publicodes"
import "./modele-social.json"

const engine = new Engine(require("./modele-social.json"))

const result = engine.evaluate("contrat salarié . salaire net")

console.log(result.nodeValue)
```

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### Checking for Experimental Rules

Source: https://mon-entreprise.urssaf.fr/int%C3%A9gration/biblioth%C3%A8que-de-calcul

Experimental rules may change or be removed without notice. Always verify their existence before using them in application code.

```json
{
  "warnings": [
    {
      "rule": "experimental rule name",
      "message": "This rule is experimental and may change."
    }
  ]
}
```

--------------------------------

### Simulate with Past Legislation

Source: https://mon-entreprise.urssaf.fr/int%C3%A9gration/biblioth%C3%A8que-de-calcul

To perform a simulation using legislation from a past date, include the 'date' parameter in your situation object.

```json
{
  "situation": {
    "date": "2022-01-01"
  }
}
```

--------------------------------

### Setting Collective AT/MP Rate

Source: https://mon-entreprise.urssaf.fr/int%C3%A9gration/biblioth%C3%A8que-de-calcul

The collective AT/MP rate must be manually provided. This rate is crucial for accurate calculations.

```json
{
  "situation": {
    "établissement": {
      "taux_ATMP": {
        "taux_collectif": 0.015
      }
    }
  }
}
```

--------------------------------

### Setting Mobility Contribution Rate

Source: https://mon-entreprise.urssaf.fr/int%C3%A9gration/biblioth%C3%A8que-de-calcul

When simulating, you may need to manually specify the mobility contribution rate if it's not automatically determined by the commune.

```json
{
  "situation": {
    "établissement": {
      "commune": {
        "taux_versement_mobilite": 0.02
      }
    }
  }
}
```

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### Handling Missing Variables

Source: https://mon-entreprise.urssaf.fr/int%C3%A9gration/biblioth%C3%A8que-de-calcul

The 'missingVariables' object returned by 'evaluate' lists rules with absent input values. You can optionally provide values for these rules to customize simulations.

```json
{
  "missingVariables": {
    "some rule": 10,
    "another rule": 5
  }
}
```
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