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node_modules/postcss-normalize-string/dist/index.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+
+var _postcssValueParser = _interopRequireDefault(require("postcss-value-parser"));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/*
+ * Constants (parser usage)
+ */
+const SINGLE_QUOTE = "'".charCodeAt(0);
+const DOUBLE_QUOTE = '"'.charCodeAt(0);
+const BACKSLASH = '\\'.charCodeAt(0);
+const NEWLINE = '\n'.charCodeAt(0);
+const SPACE = ' '.charCodeAt(0);
+const FEED = '\f'.charCodeAt(0);
+const TAB = '\t'.charCodeAt(0);
+const CR = '\r'.charCodeAt(0);
+const WORD_END = /[ \n\t\r\f'"\\]/g;
+/*
+ * Constants (node type strings)
+ */
+
+const C_STRING = 'string';
+const C_ESCAPED_SINGLE_QUOTE = 'escapedSingleQuote';
+const C_ESCAPED_DOUBLE_QUOTE = 'escapedDoubleQuote';
+const C_SINGLE_QUOTE = 'singleQuote';
+const C_DOUBLE_QUOTE = 'doubleQuote';
+const C_NEWLINE = 'newline';
+const C_SINGLE = 'single';
+/*
+ * Literals
+ */
+
+const L_SINGLE_QUOTE = `'`;
+const L_DOUBLE_QUOTE = `"`;
+const L_NEWLINE = `\\\n`;
+/*
+ * Parser nodes
+ */
+
+const T_ESCAPED_SINGLE_QUOTE = {
+  type: C_ESCAPED_SINGLE_QUOTE,
+  value: `\\'`
+};
+const T_ESCAPED_DOUBLE_QUOTE = {
+  type: C_ESCAPED_DOUBLE_QUOTE,
+  value: `\\"`
+};
+const T_SINGLE_QUOTE = {
+  type: C_SINGLE_QUOTE,
+  value: L_SINGLE_QUOTE
+};
+const T_DOUBLE_QUOTE = {
+  type: C_DOUBLE_QUOTE,
+  value: L_DOUBLE_QUOTE
+};
+const T_NEWLINE = {
+  type: C_NEWLINE,
+  value: L_NEWLINE
+};
+
+function stringify(ast) {
+  return ast.nodes.reduce((str, {
+    value
+  }) => {
+    // Collapse multiple line strings automatically
+    if (value === L_NEWLINE) {
+      return str;
+    }
+
+    return str + value;
+  }, '');
+}
+
+function parse(str) {
+  let code, next, value;
+  let pos = 0;
+  let len = str.length;
+  const ast = {
+    nodes: [],
+    types: {
+      escapedSingleQuote: 0,
+      escapedDoubleQuote: 0,
+      singleQuote: 0,
+      doubleQuote: 0
+    },
+    quotes: false
+  };
+
+  while (pos < len) {
+    code = str.charCodeAt(pos);
+
+    switch (code) {
+      case SPACE:
+      case TAB:
+      case CR:
+      case FEED:
+        next = pos;
+
+        do {
+          next += 1;
+          code = str.charCodeAt(next);
+        } while (code === SPACE || code === NEWLINE || code === TAB || code === CR || code === FEED);
+
+        ast.nodes.push({
+          type: 'space',
+          value: str.slice(pos, next)
+        });
+        pos = next - 1;
+        break;
+
+      case SINGLE_QUOTE:
+        ast.nodes.push(T_SINGLE_QUOTE);
+        ast.types[C_SINGLE_QUOTE]++;
+        ast.quotes = true;
+        break;
+
+      case DOUBLE_QUOTE:
+        ast.nodes.push(T_DOUBLE_QUOTE);
+        ast.types[C_DOUBLE_QUOTE]++;
+        ast.quotes = true;
+        break;
+
+      case BACKSLASH:
+        next = pos + 1;
+
+        if (str.charCodeAt(next) === SINGLE_QUOTE) {
+          ast.nodes.push(T_ESCAPED_SINGLE_QUOTE);
+          ast.types[C_ESCAPED_SINGLE_QUOTE]++;
+          ast.quotes = true;
+          pos = next;
+          break;
+        } else if (str.charCodeAt(next) === DOUBLE_QUOTE) {
+          ast.nodes.push(T_ESCAPED_DOUBLE_QUOTE);
+          ast.types[C_ESCAPED_DOUBLE_QUOTE]++;
+          ast.quotes = true;
+          pos = next;
+          break;
+        } else if (str.charCodeAt(next) === NEWLINE) {
+          ast.nodes.push(T_NEWLINE);
+          pos = next;
+          break;
+        }
+
+      /*
+       * We need to fall through here to handle the token as
+       * a whole word. The missing 'break' is intentional.
+       */
+
+      default:
+        WORD_END.lastIndex = pos + 1;
+        WORD_END.test(str);
+
+        if (WORD_END.lastIndex === 0) {
+          next = len - 1;
+        } else {
+          next = WORD_END.lastIndex - 2;
+        }
+
+        value = str.slice(pos, next + 1);
+        ast.nodes.push({
+          type: C_STRING,
+          value
+        });
+        pos = next;
+    }
+
+    pos++;
+  }
+
+  return ast;
+}
+
+function changeWrappingQuotes(node, ast) {
+  const {
+    types
+  } = ast;
+
+  if (types[C_SINGLE_QUOTE] || types[C_DOUBLE_QUOTE]) {
+    return;
+  }
+
+  if (node.quote === L_SINGLE_QUOTE && types[C_ESCAPED_SINGLE_QUOTE] > 0 && !types[C_ESCAPED_DOUBLE_QUOTE]) {
+    node.quote = L_DOUBLE_QUOTE;
+  }
+
+  if (node.quote === L_DOUBLE_QUOTE && types[C_ESCAPED_DOUBLE_QUOTE] > 0 && !types[C_ESCAPED_SINGLE_QUOTE]) {
+    node.quote = L_SINGLE_QUOTE;
+  }
+
+  ast.nodes = ast.nodes.reduce((newAst, child) => {
+    if (child.type === C_ESCAPED_DOUBLE_QUOTE && node.quote === L_SINGLE_QUOTE) {
+      return [...newAst, T_DOUBLE_QUOTE];
+    }
+
+    if (child.type === C_ESCAPED_SINGLE_QUOTE && node.quote === L_DOUBLE_QUOTE) {
+      return [...newAst, T_SINGLE_QUOTE];
+    }
+
+    return [...newAst, child];
+  }, []);
+}
+
+function normalize(value, preferredQuote) {
+  if (!value || !value.length) {
+    return value;
+  }
+
+  return (0, _postcssValueParser.default)(value).walk(child => {
+    if (child.type !== C_STRING) {
+      return;
+    }
+
+    const ast = parse(child.value);
+
+    if (ast.quotes) {
+      changeWrappingQuotes(child, ast);
+    } else if (preferredQuote === C_SINGLE) {
+      child.quote = L_SINGLE_QUOTE;
+    } else {
+      child.quote = L_DOUBLE_QUOTE;
+    }
+
+    child.value = stringify(ast);
+  }).toString();
+}
+
+const params = {
+  rule: 'selector',
+  decl: 'value',
+  atrule: 'params'
+};
+
+function pluginCreator(opts) {
+  const {
+    preferredQuote
+  } = Object.assign({}, {
+    preferredQuote: 'double'
+  }, opts);
+  return {
+    postcssPlugin: 'postcss-normalize-string',
+
+    OnceExit(css) {
+      const cache = {};
+      css.walk(node => {
+        const {
+          type
+        } = node;
+
+        if (Object.prototype.hasOwnProperty.call(params, type)) {
+          const param = params[type];
+          const key = node[param] + '|' + preferredQuote;
+
+          if (cache[key]) {
+            node[param] = cache[key];
+            return;
+          }
+
+          const newValue = normalize(node[param], preferredQuote);
+          node[param] = newValue;
+          cache[key] = newValue;
+        }
+      });
+    }
+
+  };
+}
+
+pluginCreator.postcss = true;
+var _default = pluginCreator;
+exports.default = _default;
+module.exports = exports.default;