next
Version:
The React Framework
58 lines (57 loc) • 2.68 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = process;
var _path = _interopRequireDefault(require("path"));
var _fileProtocol = _interopRequireDefault(require("./file-protocol"));
function process(postcss, sourceFile, sourceContent, params) {
// #107 libsass emits orphan CR not considered newline, postcss does consider newline (content vs source-map mismatch)
// prepend file protocol to all sources to avoid problems with source map
return postcss([
postcss.plugin('postcss-resolve-url', postcssPlugin)
]).process(sourceContent, {
from: _fileProtocol.default.prepend(sourceFile),
map: params.outputSourceMap && {
prev: !!params.inputSourceMap && _fileProtocol.default.prepend(params.inputSourceMap),
inline: false,
annotation: false,
sourcesContent: true
}
}).then((result)=>({
content: result.css,
map: params.outputSourceMap ? _fileProtocol.default.remove(result.map.toJSON()) : null
})
);
/**
* Plugin for postcss that follows SASS transpilation.
*/ function postcssPlugin() {
return function(styles) {
styles.walkDecls(eachDeclaration);
};
/**
* Process a declaration from the syntax tree.
* @param declaration
*/ function eachDeclaration(declaration) {
const isValid = declaration.value && declaration.value.indexOf('url') >= 0;
if (isValid) {
// reverse the original source-map to find the original source file before transpilation
const startPosApparent = declaration.source.start, startPosOriginal = params.sourceMapConsumer && params.sourceMapConsumer.originalPositionFor(startPosApparent);
// we require a valid directory for the specified file
const directory = startPosOriginal && startPosOriginal.source && _fileProtocol.default.remove(_path.default.dirname(startPosOriginal.source));
if (directory) {
declaration.value = params.transformDeclaration(declaration.value, directory);
} else if (params.sourceMapConsumer) {
throw new Error('source-map information is not available at url() declaration ' + (ORPHAN_CR_REGEX.test(sourceContent) ? '(found orphan CR, try removeCR option)' : '(no orphan CR found)'));
}
}
}
}
}
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {
default: obj
};
}
const ORPHAN_CR_REGEX = /\r(?!\n)(.|\n)?/g;
//# sourceMappingURL=postcss.js.map