ifc-language-server/node_modules/is-plain-obj/readme.md
Ryan Schultz 8afacf268a Implemented a working Language Server Protocol (LSP) for IFC files with:
- Hover provider showing entity information and type
- Go-to-definition (F12) for entity references
- Basic IFC file validation (ISO-10303-21 header check)
- Entity parsing with regex-based detection
- Proper CommonJS module system (avoiding ES module issues)

This replaces the broken baseline from ifc-developer-tools which had:
- Non-functional ES module configuration
- Circular dependency issues
- Parser crashes
- Non-working PositionVisitor

Built on Microsoft's LSP example template for a clean, maintainable foundation.

Next: Add hierarchical entity dependency tree in hover tooltip."
2025-12-07 10:20:07 -06:00

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# is-plain-obj [![Build Status](https://travis-ci.org/sindresorhus/is-plain-obj.svg?branch=master)](https://travis-ci.org/sindresorhus/is-plain-obj)
> Check if a value is a plain object
An object is plain if it's created by either `{}`, `new Object()`, or `Object.create(null)`.
## Install
```
$ npm install is-plain-obj
```
## Usage
```js
const isPlainObject = require('is-plain-obj');
isPlainObject({foo: 'bar'});
//=> true
isPlainObject(new Object());
//=> true
isPlainObject(Object.create(null));
//=> true
isPlainObject([1, 2, 3]);
//=> false
class Unicorn {}
isPlainObject(new Unicorn());
//=> false
```
## Related
- [is-obj](https://github.com/sindresorhus/is-obj) - Check if a value is an object
- [is](https://github.com/sindresorhus/is) - Type check values
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