+++ /dev/null
-/* @flow */
-"use strict";
-
-const _ = require("lodash");
-
-/*:: type rangeDataType = {
- all: Array<Object>,
-}
-*/
-
-/*:: type rangeType = {
- end?: number,
- start: number,
- used?: boolean,
-}*/
-
-/*:: type unusedRangeT = {
- start: number,
- end?: number,
-}*/
-
-module.exports = function(
- results /*: Array<stylelint$result>*/
-) /*: stylelint$needlessDisablesReport*/ {
- const report = [];
-
- results.forEach(result => {
- // File with `CssSyntaxError` have not `_postcssResult`
- if (!result._postcssResult) {
- return;
- }
-
- const unused = { source: result.source, ranges: [] };
- const rangeData /*: ?rangeDataType*/ = _.cloneDeep(
- result._postcssResult.stylelint.disabledRanges
- );
-
- if (!rangeData) {
- return;
- }
-
- result.warnings.forEach(warning => {
- const rule /*: string*/ = warning.rule;
-
- const ruleRanges /*: Array<Object>*/ = rangeData[rule];
- if (ruleRanges) {
- // Back to front so we get the *last* range that applies to the warning
- for (const range of ruleRanges.reverse()) {
- if (isWarningInRange(warning, range)) {
- range.used = true;
- return;
- }
- }
- }
-
- for (const range of rangeData.all.reverse()) {
- if (isWarningInRange(warning, range)) {
- range.used = true;
- return;
- }
- }
- });
-
- Object.keys(rangeData).forEach(rule => {
- rangeData[rule].forEach((range /*: rangeType*/) => {
- // Is an equivalent range already marked as unused?
- const alreadyMarkedUnused /*: ?unusedRangeT*/ = unused.ranges.find((
- unusedRange /*: unusedRangeT*/
- ) => {
- return (
- unusedRange.start === range.start && unusedRange.end === range.end
- );
- });
-
- // If this range is unused and no equivalent is marked,
- // mark this range as unused
- if (!range.used && !alreadyMarkedUnused) {
- unused.ranges.push(range);
- }
-
- // If this range is used but an equivalent has been marked as unused,
- // remove that equivalent. This can happen because of the duplication
- // of ranges in rule-specific range sets and the "all" range set
- if (range.used && alreadyMarkedUnused) {
- _.remove(unused.ranges, alreadyMarkedUnused);
- }
- });
- });
-
- unused.ranges = _.sortBy(unused.ranges, ["start", "end"]);
-
- report.push(unused);
- });
-
- return report;
-};
-
-function isWarningInRange(
- warning /*: {
- column: number,
- rule: string,
- line: number,
- severity: string,
- text: string,
- }*/,
- range /*: {
- rules?: Array<string>,
- start: number,
- end?: number,
- used?: boolean,
- }*/
-) /*: boolean*/ {
- const rule = warning.rule,
- line = warning.line;
-
- // Need to check if range.end exist, because line number type cannot be compared to undefined
- return (
- range.start <= line &&
- ((range.end !== undefined && range.end >= line) ||
- range.end === undefined) &&
- (!range.rules || range.rules.indexOf(rule) !== -1)
- );
-}