postcss,(plugins): nanocss, postcss-preset-env

1 files changed, 54 insertions, 0 deletions

diff --git a/node_modules/css-tree/lib/syntax/create.js b/node_modules/css-tree/lib/syntax/create.js
new file mode 100644
index 00000000..73e6cf7d
--- /dev/null
+++ b/node_modules/css-tree/lib/syntax/create.js
@@ -0,0 +1,54 @@
+import { tokenize } from '../tokenizer/index.js';
+import { createParser } from '../parser/create.js';
+import { createGenerator } from '../generator/create.js';
+import { createConvertor } from '../convertor/create.js';
+import { createWalker } from '../walker/create.js';
+import { Lexer } from '../lexer/Lexer.js';
+import mix from './config/mix.js';
+
+function createSyntax(config) {
+    const parse = createParser(config);
+    const walk = createWalker(config);
+    const generate = createGenerator(config);
+    const { fromPlainObject, toPlainObject } = createConvertor(walk);
+
+    const syntax = {
+        lexer: null,
+        createLexer: config => new Lexer(config, syntax, syntax.lexer.structure),
+
+        tokenize,
+        parse,
+        generate,
+
+        walk,
+        find: walk.find,
+        findLast: walk.findLast,
+        findAll: walk.findAll,
+
+        fromPlainObject,
+        toPlainObject,
+
+        fork(extension) {
+            const base = mix({}, config); // copy of config
+
+            return createSyntax(
+                typeof extension === 'function'
+                    ? extension(base, Object.assign)
+                    : mix(base, extension)
+            );
+        }
+    };
+
+    syntax.lexer = new Lexer({
+        generic: true,
+        units: config.units,
+        types: config.types,
+        atrules: config.atrules,
+        properties: config.properties,
+        node: config.node
+    }, syntax);
+
+    return syntax;
+};
+
+export default config => createSyntax(mix({}, config));