tools: move eslint from tools to tools/node_modules

This is required because we need to add the babel-eslint dependency
and it has to be able to resolve "eslint".
babel-eslint is required to support future ES features such as async
iterators and import.meta.

Refs: https://github.com/nodejs/node/pull/17755
PR-URL: https://github.com/nodejs/node/pull/17820
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>

1 files changed, 120 insertions, 0 deletions

diff --git a/tools/node_modules/eslint/node_modules/unist-util-is/readme.md b/tools/node_modules/eslint/node_modules/unist-util-is/readme.md
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+# unist-util-is [![Build Status][travis-badge]][travis] [![Coverage Status][codecov-badge]][codecov]
+
+[**Unist**][unist] utility to check if a node passes a test.
+
+## Installation
+
+[npm][]:
+
+```bash
+npm install unist-util-is
+```
+
+## Usage
+
+```js
+var is = require('unist-util-is');
+
+var node = {type: 'strong'};
+var parent = {type: 'paragraph', children: [node]};
+
+function test(node, n) { return n === 5 }
+
+is(); // false
+is(null, {children: []}); // false
+is(null, node); // true
+is('strong', node); // true
+is('emphasis', node); // false
+
+is(node, node) // true
+is({type: 'paragraph'}, parent) // true
+is({type: 'strong'}, parent) // false
+
+is(test, node); // false
+is(test, node, 4, parent); // false
+is(test, node, 5, parent); // true
+```
+
+## API
+
+### `is(test, node[, index, parent[, context]])`
+
+###### Parameters
+
+*   `test` ([`Function`][test], `string`, `Object`, or `Array.<Test>`, optional)
+    —  When not given, checks if `node` is a [`Node`][node].
+    When `string`, works like passing `function (node) {return
+    node.type === test}`.
+    When `array`, checks any one of the subtests pass.
+    When `object`, checks that all keys in `test` are in `node`,
+    and that they have (strictly) equal values
+*   `node` ([`Node`][node]) — Node to check.  `false` is returned
+*   `index` (`number`, optional) — Position of `node` in `parent`
+*   `parent` (`Node`, optional) — Parent of `node`
+*   `context` (`*`, optional) — Context object to invoke `test` with
+
+###### Returns
+
+`boolean` — Whether `test` passed _and_ `node` is a [`Node`][node] (object
+with `type` set to non-empty `string`).
+
+#### `function test(node[, index, parent])`
+
+###### Parameters
+
+*   `node` (`Node`) — Node to test
+*   `index` (`number?`) — Position of `node` in `parent`
+*   `parent` (`Node?`) — Parent of `node`
+
+###### Context
+
+`*` — The to `is` given `context`.
+
+###### Returns
+
+`boolean?` — Whether `node` matches.
+
+## Related
+
+*   [`unist-util-find-after`](https://github.com/syntax-tree/unist-util-find-after)
+    — Find a node after another node
+*   [`unist-util-find-before`](https://github.com/syntax-tree/unist-util-find-before)
+    — Find a node before another node
+*   [`unist-util-find-all-after`](https://github.com/syntax-tree/unist-util-find-all-after)
+    — Find all nodes after another node
+*   [`unist-util-find-all-before`](https://github.com/syntax-tree/unist-util-find-all-before)
+    — Find all nodes before another node
+*   [`unist-util-find-all-between`](https://github.com/mrzmmr/unist-util-find-all-between)
+    — Find all nodes between two nodes
+*   [`unist-util-find`](https://github.com/blahah/unist-util-find)
+    — Find nodes matching a predicate
+*   [`unist-util-filter`](https://github.com/eush77/unist-util-filter)
+    — Create a new tree with nodes that pass a check
+*   [`unist-util-remove`](https://github.com/eush77/unist-util-remove)
+    — Remove nodes from tree
+
+## License
+
+[MIT][license] © [Titus Wormer][author]
+
+<!-- Definitions -->
+
+[travis-badge]: https://img.shields.io/travis/syntax-tree/unist-util-is.svg
+
+[travis]: https://travis-ci.org/syntax-tree/unist-util-is
+
+[codecov-badge]: https://img.shields.io/codecov/c/github/syntax-tree/unist-util-is.svg
+
+[codecov]: https://codecov.io/github/syntax-tree/unist-util-is
+
+[npm]: https://docs.npmjs.com/cli/install
+
+[license]: LICENSE
+
+[author]: http://wooorm.com
+
+[unist]: https://github.com/syntax-tree/unist
+
+[node]: https://github.com/syntax-tree/unist#node
+
+[test]: #function-testnode-index-parent