0.2.0 - Mid migration

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

@@ -0,0 +1,260 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+
+var _postcss = require('postcss');
+
+var _postcss2 = _interopRequireDefault(_postcss);
+
+var _postcssValueParser = require('postcss-value-parser');
+
+var _postcssValueParser2 = _interopRequireDefault(_postcssValueParser);
+
+var _has = require('has');
+
+var _has2 = _interopRequireDefault(_has);
+
+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, _postcssValueParser2.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'
+};
+
+exports.default = _postcss2.default.plugin('postcss-normalize-string', opts => {
+    const { preferredQuote } = Object.assign({}, {
+        preferredQuote: 'double'
+    }, opts);
+
+    return css => {
+        const cache = {};
+
+        css.walk(node => {
+            const { type } = node;
+
+            if ((0, _has2.default)(params, type)) {
+                const param = params[type];
+                const key = node[param] + '|' + preferredQuote;
+
+                if (cache[key]) {
+                    node[param] = cache[key];
+
+                    return;
+                }
+
+                const result = normalize(node[param], preferredQuote);
+
+                node[param] = result;
+                cache[key] = result;
+            }
+        });
+    };
+});
+module.exports = exports['default'];