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

1 files changed, 248 insertions, 0 deletions

diff --git a/node_modules/postcss-minify-font-values/src/lib/minify-family.js b/node_modules/postcss-minify-font-values/src/lib/minify-family.js
new file mode 100644
index 00000000..5d6c4851
--- /dev/null
+++ b/node_modules/postcss-minify-font-values/src/lib/minify-family.js
@@ -0,0 +1,248 @@
+'use strict';
+const { stringify } = require('postcss-value-parser');
+
+/**
+ * @param {string[]} list
+ * @return {string[]}
+ */
+function uniqueFontFamilies(list) {
+  return list.filter((item, i) => {
+    if (item.toLowerCase() === 'monospace') {
+      return true;
+    }
+    return i === list.indexOf(item);
+  });
+}
+
+const globalKeywords = ['inherit', 'initial', 'unset'];
+const genericFontFamilykeywords = new Set([
+  'sans-serif',
+  'serif',
+  'fantasy',
+  'cursive',
+  'monospace',
+  'system-ui',
+]);
+
+/**
+ * @param {string} value
+ * @param {number} length
+ * @return {string[]}
+ */
+function makeArray(value, length) {
+  let array = [];
+  while (length--) {
+    array[length] = value;
+  }
+  return array;
+}
+
+// eslint-disable-next-line no-useless-escape
+const regexSimpleEscapeCharacters = /[ !"#$%&'()*+,.\/;<=>?@\[\\\]^`{|}~]/;
+
+/**
+ * @param {string} string
+ * @param {boolean} escapeForString
+ * @return {string}
+ */
+function escape(string, escapeForString) {
+  let counter = 0;
+  let character;
+  let charCode;
+  let value;
+  let output = '';
+
+  while (counter < string.length) {
+    character = string.charAt(counter++);
+    charCode = character.charCodeAt(0);
+
+    // \r is already tokenized away at this point
+    // `:` can be escaped as `\:`, but that fails in IE < 8
+    if (!escapeForString && /[\t\n\v\f:]/.test(character)) {
+      value = '\\' + charCode.toString(16) + ' ';
+    } else if (
+      !escapeForString &&
+      regexSimpleEscapeCharacters.test(character)
+    ) {
+      value = '\\' + character;
+    } else {
+      value = character;
+    }
+
+    output += value;
+  }
+
+  if (!escapeForString) {
+    if (/^-[-\d]/.test(output)) {
+      output = '\\-' + output.slice(1);
+    }
+
+    const firstChar = string.charAt(0);
+
+    if (/\d/.test(firstChar)) {
+      output = '\\3' + firstChar + ' ' + output.slice(1);
+    }
+  }
+
+  return output;
+}
+
+const regexKeyword = new RegExp(
+  [...genericFontFamilykeywords].concat(globalKeywords).join('|'),
+  'i'
+);
+const regexInvalidIdentifier = /^(-?\d|--)/;
+const regexSpaceAtStart = /^\x20/;
+const regexWhitespace = /[\t\n\f\r\x20]/g;
+const regexIdentifierCharacter = /^[a-zA-Z\d\xa0-\uffff_-]+$/;
+const regexConsecutiveSpaces = /(\\(?:[a-fA-F0-9]{1,6}\x20|\x20))?(\x20{2,})/g;
+const regexTrailingEscape = /\\[a-fA-F0-9]{0,6}\x20$/;
+const regexTrailingSpace = /\x20$/;
+
+/**
+ * @param {string} string
+ * @return {string}
+ */
+function escapeIdentifierSequence(string) {
+  let identifiers = string.split(regexWhitespace);
+  let index = 0;
+  /** @type {string[] | string} */
+  let result = [];
+  let escapeResult;
+
+  while (index < identifiers.length) {
+    let subString = identifiers[index++];
+
+    if (subString === '') {
+      result.push(subString);
+      continue;
+    }
+
+    escapeResult = escape(subString, false);
+
+    if (regexIdentifierCharacter.test(subString)) {
+      // the font family name part consists of allowed characters exclusively
+      if (regexInvalidIdentifier.test(subString)) {
+        // the font family name part starts with two hyphens, a digit, or a
+        // hyphen followed by a digit
+        if (index === 1) {
+          // if this is the first item
+          result.push(escapeResult);
+        } else {
+          // if it’s not the first item, we can simply escape the space
+          // between the two identifiers to merge them into a single
+          // identifier rather than escaping the start characters of the
+          // second identifier
+          result[index - 2] += '\\';
+          result.push(escape(subString, true));
+        }
+      } else {
+        // the font family name part doesn’t start with two hyphens, a digit,
+        // or a hyphen followed by a digit
+        result.push(escapeResult);
+      }
+    } else {
+      // the font family name part contains invalid identifier characters
+      result.push(escapeResult);
+    }
+  }
+
+  result = result.join(' ').replace(regexConsecutiveSpaces, ($0, $1, $2) => {
+    const spaceCount = $2.length;
+    const escapesNeeded = Math.floor(spaceCount / 2);
+    const array = makeArray('\\ ', escapesNeeded);
+
+    if (spaceCount % 2) {
+      array[escapesNeeded - 1] += '\\ ';
+    }
+
+    return ($1 || '') + ' ' + array.join(' ');
+  });
+
+  // Escape trailing spaces unless they’re already part of an escape
+  if (regexTrailingSpace.test(result) && !regexTrailingEscape.test(result)) {
+    result = result.replace(regexTrailingSpace, '\\ ');
+  }
+
+  if (regexSpaceAtStart.test(result)) {
+    result = '\\ ' + result.slice(1);
+  }
+
+  return result;
+}
+/**
+ * @param {import('postcss-value-parser').Node[]} nodes
+ * @param {import('../index').Options} opts
+ * @return {import('postcss-value-parser').WordNode[]}
+ */
+module.exports = function (nodes, opts) {
+  /** @type {import('postcss-value-parser').Node[]} */
+  const family = [];
+  /** @type {import('postcss-value-parser').WordNode | null} */
+  let last = null;
+  let i, max;
+
+  nodes.forEach((node, index, arr) => {
+    if (node.type === 'string' || node.type === 'function') {
+      family.push(node);
+    } else if (node.type === 'word') {
+      if (!last) {
+        last = /** @type {import('postcss-value-parser').WordNode} */ ({
+          type: 'word',
+          value: '',
+        });
+        family.push(last);
+      }
+
+      last.value += node.value;
+    } else if (node.type === 'space') {
+      if (last && index !== arr.length - 1) {
+        last.value += ' ';
+      }
+    } else {
+      last = null;
+    }
+  });
+
+  let normalizedFamilies = family.map((node) => {
+    if (node.type === 'string') {
+      const isKeyword = regexKeyword.test(node.value);
+
+      if (
+        !opts.removeQuotes ||
+        isKeyword ||
+        /[0-9]/.test(node.value.slice(0, 1))
+      ) {
+        return stringify(node);
+      }
+
+      let escaped = escapeIdentifierSequence(node.value);
+
+      if (escaped.length < node.value.length + 2) {
+        return escaped;
+      }
+    }
+
+    return stringify(node);
+  });
+
+  if (opts.removeAfterKeyword) {
+    for (i = 0, max = normalizedFamilies.length; i < max; i += 1) {
+      if (genericFontFamilykeywords.has(normalizedFamilies[i].toLowerCase())) {
+        normalizedFamilies = normalizedFamilies.slice(0, i + 1);
+        break;
+      }
+    }
+  }
+
+  if (opts.removeDuplicates) {
+    normalizedFamilies = uniqueFontFamilies(normalizedFamilies);
+  }
+
+  return [
+    /** @type {import('postcss-value-parser').WordNode} */ ({
+      type: 'word',
+      value: normalizedFamilies.join(),
+    }),
+  ];
+};