Initial commit

.babelrc

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+{
+  "presets": ["@babel/preset-env"]
+}

.gitignore

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+node_modules
+.parcel-cache

LICENSE

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+Copyright (c) 2021, Stamen Design <[email protected]>
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+-------------------------------------------------------------------------------
+
+Contains code from mapbox-gl-js v1.13 and earlier
+
+Version v1.13 of mapbox-gl-js and earlier are licensed under a BSD-3-Clause license
+
+Copyright (c) 2020, Mapbox
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice,
+  this list of conditions and the following disclaimer.
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+* Neither the name of Mapbox GL JS nor the names of its contributors
+  may be used to endorse or promote products derived from this software
+  without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.md

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+# mapbox-gl-style-linter
+
+Lint Mapbox GL styles.
+
+## Why? Doesn't the style spec do this?
+
+Yes, the style spec has [gl-style-validate](https://github.com/mapbox/mapbox-gl-js/blob/83b8d8fb690a9fd1a9eef558d425725679287887/src/style-spec/bin/gl-style-validate), but this module solves two issues:
+
+ 1. The style spec tool uses an older version of Node, so it can be difficult to execute in projects that use newer versions.
+ 2. The style spec tool does not find every error you might want to find. For example, the style spec tool does not raise errors for `paint` or `layout` property ids at the top level of a layer.
+
+This tool takes the same inputs and creates compatible outputs to the style spec's `gl-style-validate` tool.
+
+## Usage
+
+ 1. Install.
+ 2. Execute on one or more styles:
+    ```bash
+    mapbox-gl-style-lint styles/*.json
+    ``` 
+
+## Development
+
+ 1. Clone this repo.
+ 2. Install dependencies (`yarn install`).
+ 3. Start build tool (`yarn watch`).
+ 4. Start the test suite (`yarn test`).
+ 5. Make changes in `src`.
+

bin/mapbox-gl-style-lint

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+#!/usr/bin/env node
+
+const fs = require('fs');
+const jsonlint = require('@mapbox/jsonlint-lines-primitives');
+
+const { lint } = require('../dist/main');
+
+const parseArguments = argv => {
+  const args = argv.slice(2);
+  const filepaths = [];
+
+  args.forEach(v => {
+    filepaths.push(v);
+  });
+
+  if (!filepaths.length) {
+    console.error(`Could not find filepaths. Exiting.
+
+Usage: ${process.argv[1]} files...`);
+    process.exit(1);
+  }
+
+  return { filepaths };
+}
+
+const outputErrors = (file, errors) => {
+  errors.forEach(e => {
+    console.log(`${file}:${e.line}: ${e.message}`);
+  });
+}
+
+const { filepaths } = parseArguments(process.argv);
+
+filepaths.forEach(file => {
+  fs.readFile(file, 'utf8', (err, data) => {
+    if (err) {
+      console.error(err);
+      process.exit(1);
+    }
+
+    // Use jsonlint to get line numbers
+    const style = jsonlint.parse(data);
+
+    const errors = lint(style);
+
+    if (errors) {
+      outputErrors(file, errors);
+      process.exit(1);
+    }
+  });
+});