index.js
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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var _postcss = require("postcss");
var _postcssValueParser = require("postcss-value-parser");
var _postcssValueParser2 = _interopRequireDefault(_postcssValueParser);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
const atrule = "atrule";
const decl = "decl";
const rule = "rule";
function reduceCalcWhitespaces(node) {
if (node.type === "space") {
node.value = " ";
} else if (node.type === "function") {
node.before = node.after = "";
}
}
function reduceWhitespaces(node) {
if (node.type === "space") {
node.value = " ";
} else if (node.type === "div") {
node.before = node.after = "";
} else if (node.type === "function") {
node.before = node.after = "";
if (node.value.toLowerCase() === "calc") {
_postcssValueParser2.default.walk(node.nodes, reduceCalcWhitespaces);
return false;
}
}
}
exports.default = (0, _postcss.plugin)("postcss-normalize-whitespace", () => {
return css => {
const cache = {};
css.walk(node => {
const { type } = node;
if (~[decl, rule, atrule].indexOf(type) && node.raws.before) {
node.raws.before = node.raws.before.replace(/\s/g, "");
}
if (type === decl) {
// Ensure that !important values do not have any excess whitespace
if (node.important) {
node.raws.important = "!important";
}
// Remove whitespaces around ie 9 hack
node.value = node.value.replace(/\s*(\\9)\s*/, "$1");
const value = node.value;
if (cache[value]) {
node.value = cache[value];
} else {
const parsed = (0, _postcssValueParser2.default)(node.value);
const result = parsed.walk(reduceWhitespaces).toString();
// Trim whitespace inside functions & dividers
node.value = result;
cache[value] = result;
}
// Remove extra semicolons and whitespace before the declaration
if (node.raws.before) {
const prev = node.prev();
if (prev && prev.type !== rule) {
node.raws.before = node.raws.before.replace(/;/g, "");
}
}
node.raws.between = ":";
node.raws.semicolon = false;
} else if (type === rule || type === atrule) {
node.raws.between = node.raws.after = "";
node.raws.semicolon = false;
}
});
// Remove final newline
css.raws.after = "";
};
});
module.exports = exports["default"];