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https://github.com/xfarrow/blink
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Change endpoint from persons to people
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xfarrow
444
backend/apis/nodejs/node_modules/istanbul-lib-coverage/lib/file-coverage.js
generated
vendored
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444
backend/apis/nodejs/node_modules/istanbul-lib-coverage/lib/file-coverage.js
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vendored
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@ -0,0 +1,444 @@
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/*
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Copyright 2012-2015, Yahoo Inc.
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Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
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*/
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'use strict';
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const percent = require('./percent');
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const dataProperties = require('./data-properties');
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const { CoverageSummary } = require('./coverage-summary');
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// returns a data object that represents empty coverage
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function emptyCoverage(filePath, reportLogic) {
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const cov = {
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path: filePath,
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statementMap: {},
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fnMap: {},
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branchMap: {},
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s: {},
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f: {},
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b: {}
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};
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if (reportLogic) cov.bT = {};
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return cov;
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}
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// asserts that a data object "looks like" a coverage object
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function assertValidObject(obj) {
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const valid =
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obj &&
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obj.path &&
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obj.statementMap &&
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obj.fnMap &&
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obj.branchMap &&
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obj.s &&
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obj.f &&
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obj.b;
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if (!valid) {
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throw new Error(
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'Invalid file coverage object, missing keys, found:' +
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Object.keys(obj).join(',')
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);
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}
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}
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const keyFromLoc = ({ start, end }) =>
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`${start.line}|${start.column}|${end.line}|${end.column}`;
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const isObj = o => !!o && typeof o === 'object';
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const isLineCol = o =>
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isObj(o) && typeof o.line === 'number' && typeof o.column === 'number';
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const isLoc = o => isObj(o) && isLineCol(o.start) && isLineCol(o.end);
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const getLoc = o => (isLoc(o) ? o : isLoc(o.loc) ? o.loc : null);
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// When merging, we can have a case where two ranges cover
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// the same block of code with `hits=1`, and each carve out a
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// different range with `hits=0` to indicate it's uncovered.
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// Find the nearest container so that we can properly indicate
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// that both sections are hit.
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// Returns null if no containing item is found.
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const findNearestContainer = (item, map) => {
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const itemLoc = getLoc(item);
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if (!itemLoc) return null;
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// the B item is not an identified range in the A set, BUT
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// it may be contained by an identified A range. If so, then
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// any hit of that containing A range counts as a hit of this
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// B range as well. We have to find the *narrowest* containing
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// range to be accurate, since ranges can be hit and un-hit
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// in a nested fashion.
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let nearestContainingItem = null;
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let containerDistance = null;
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let containerKey = null;
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for (const [i, mapItem] of Object.entries(map)) {
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const mapLoc = getLoc(mapItem);
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if (!mapLoc) continue;
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// contained if all of line distances are > 0
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// or line distance is 0 and col dist is >= 0
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const distance = [
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itemLoc.start.line - mapLoc.start.line,
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itemLoc.start.column - mapLoc.start.column,
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mapLoc.end.line - itemLoc.end.line,
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mapLoc.end.column - itemLoc.end.column
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];
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if (
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distance[0] < 0 ||
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distance[2] < 0 ||
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(distance[0] === 0 && distance[1] < 0) ||
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(distance[2] === 0 && distance[3] < 0)
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) {
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continue;
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}
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if (nearestContainingItem === null) {
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containerDistance = distance;
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nearestContainingItem = mapItem;
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containerKey = i;
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continue;
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}
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// closer line more relevant than closer column
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const closerBefore =
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distance[0] < containerDistance[0] ||
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(distance[0] === 0 && distance[1] < containerDistance[1]);
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const closerAfter =
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distance[2] < containerDistance[2] ||
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(distance[2] === 0 && distance[3] < containerDistance[3]);
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if (closerBefore || closerAfter) {
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// closer
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containerDistance = distance;
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nearestContainingItem = mapItem;
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containerKey = i;
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}
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}
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return containerKey;
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};
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// either add two numbers, or all matching entries in a number[]
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const addHits = (aHits, bHits) => {
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if (typeof aHits === 'number' && typeof bHits === 'number') {
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return aHits + bHits;
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} else if (Array.isArray(aHits) && Array.isArray(bHits)) {
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return aHits.map((a, i) => (a || 0) + (bHits[i] || 0));
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}
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return null;
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};
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const addNearestContainerHits = (item, itemHits, map, mapHits) => {
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const container = findNearestContainer(item, map);
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if (container) {
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return addHits(itemHits, mapHits[container]);
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} else {
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return itemHits;
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}
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};
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const mergeProp = (aHits, aMap, bHits, bMap, itemKey = keyFromLoc) => {
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const aItems = {};
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for (const [key, itemHits] of Object.entries(aHits)) {
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const item = aMap[key];
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aItems[itemKey(item)] = [itemHits, item];
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}
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const bItems = {};
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for (const [key, itemHits] of Object.entries(bHits)) {
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const item = bMap[key];
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bItems[itemKey(item)] = [itemHits, item];
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}
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const mergedItems = {};
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for (const [key, aValue] of Object.entries(aItems)) {
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let aItemHits = aValue[0];
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const aItem = aValue[1];
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const bValue = bItems[key];
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if (!bValue) {
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// not an identified range in b, but might be contained by one
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aItemHits = addNearestContainerHits(aItem, aItemHits, bMap, bHits);
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} else {
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// is an identified range in b, so add the hits together
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aItemHits = addHits(aItemHits, bValue[0]);
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}
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mergedItems[key] = [aItemHits, aItem];
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}
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// now find the items in b that are not in a. already added matches.
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for (const [key, bValue] of Object.entries(bItems)) {
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let bItemHits = bValue[0];
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const bItem = bValue[1];
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if (mergedItems[key]) continue;
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// not an identified range in b, but might be contained by one
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bItemHits = addNearestContainerHits(bItem, bItemHits, aMap, aHits);
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mergedItems[key] = [bItemHits, bItem];
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}
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const hits = {};
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const map = {};
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Object.values(mergedItems).forEach(([itemHits, item], i) => {
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hits[i] = itemHits;
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map[i] = item;
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});
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return [hits, map];
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};
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/**
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* provides a read-only view of coverage for a single file.
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* The deep structure of this object is documented elsewhere. It has the following
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* properties:
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*
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* * `path` - the file path for which coverage is being tracked
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* * `statementMap` - map of statement locations keyed by statement index
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* * `fnMap` - map of function metadata keyed by function index
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* * `branchMap` - map of branch metadata keyed by branch index
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* * `s` - hit counts for statements
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* * `f` - hit count for functions
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* * `b` - hit count for branches
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*/
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class FileCoverage {
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/**
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* @constructor
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* @param {Object|FileCoverage|String} pathOrObj is a string that initializes
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* and empty coverage object with the specified file path or a data object that
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* has all the required properties for a file coverage object.
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*/
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constructor(pathOrObj, reportLogic = false) {
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if (!pathOrObj) {
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throw new Error(
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'Coverage must be initialized with a path or an object'
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);
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}
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if (typeof pathOrObj === 'string') {
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this.data = emptyCoverage(pathOrObj, reportLogic);
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} else if (pathOrObj instanceof FileCoverage) {
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this.data = pathOrObj.data;
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} else if (typeof pathOrObj === 'object') {
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this.data = pathOrObj;
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} else {
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throw new Error('Invalid argument to coverage constructor');
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}
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assertValidObject(this.data);
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}
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/**
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* returns computed line coverage from statement coverage.
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* This is a map of hits keyed by line number in the source.
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*/
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getLineCoverage() {
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const statementMap = this.data.statementMap;
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const statements = this.data.s;
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const lineMap = Object.create(null);
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Object.entries(statements).forEach(([st, count]) => {
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/* istanbul ignore if: is this even possible? */
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if (!statementMap[st]) {
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return;
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}
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const { line } = statementMap[st].start;
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const prevVal = lineMap[line];
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if (prevVal === undefined || prevVal < count) {
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lineMap[line] = count;
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}
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});
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return lineMap;
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}
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/**
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* returns an array of uncovered line numbers.
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* @returns {Array} an array of line numbers for which no hits have been
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* collected.
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*/
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getUncoveredLines() {
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const lc = this.getLineCoverage();
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const ret = [];
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Object.entries(lc).forEach(([l, hits]) => {
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if (hits === 0) {
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ret.push(l);
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}
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});
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return ret;
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}
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/**
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* returns a map of branch coverage by source line number.
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* @returns {Object} an object keyed by line number. Each object
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* has a `covered`, `total` and `coverage` (percentage) property.
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*/
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getBranchCoverageByLine() {
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const branchMap = this.branchMap;
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const branches = this.b;
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const ret = {};
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Object.entries(branchMap).forEach(([k, map]) => {
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const line = map.line || map.loc.start.line;
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const branchData = branches[k];
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ret[line] = ret[line] || [];
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ret[line].push(...branchData);
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});
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Object.entries(ret).forEach(([k, dataArray]) => {
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const covered = dataArray.filter(item => item > 0);
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const coverage = (covered.length / dataArray.length) * 100;
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ret[k] = {
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covered: covered.length,
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total: dataArray.length,
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coverage
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};
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});
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return ret;
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}
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/**
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* return a JSON-serializable POJO for this file coverage object
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*/
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toJSON() {
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return this.data;
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}
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/**
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* merges a second coverage object into this one, updating hit counts
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* @param {FileCoverage} other - the coverage object to be merged into this one.
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* Note that the other object should have the same structure as this one (same file).
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*/
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merge(other) {
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if (other.all === true) {
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return;
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}
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if (this.all === true) {
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this.data = other.data;
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return;
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}
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let [hits, map] = mergeProp(
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this.s,
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this.statementMap,
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other.s,
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other.statementMap
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);
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this.data.s = hits;
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this.data.statementMap = map;
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const keyFromLocProp = x => keyFromLoc(x.loc);
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const keyFromLocationsProp = x => keyFromLoc(x.locations[0]);
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[hits, map] = mergeProp(
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this.f,
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this.fnMap,
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other.f,
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other.fnMap,
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keyFromLocProp
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);
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this.data.f = hits;
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this.data.fnMap = map;
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[hits, map] = mergeProp(
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this.b,
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this.branchMap,
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other.b,
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other.branchMap,
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keyFromLocationsProp
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);
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this.data.b = hits;
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this.data.branchMap = map;
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// Tracking additional information about branch truthiness
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// can be optionally enabled:
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if (this.bT && other.bT) {
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[hits, map] = mergeProp(
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this.bT,
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this.branchMap,
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other.bT,
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other.branchMap,
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keyFromLocationsProp
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);
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this.data.bT = hits;
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}
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}
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computeSimpleTotals(property) {
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let stats = this[property];
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if (typeof stats === 'function') {
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stats = stats.call(this);
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}
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const ret = {
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total: Object.keys(stats).length,
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covered: Object.values(stats).filter(v => !!v).length,
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skipped: 0
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};
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ret.pct = percent(ret.covered, ret.total);
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return ret;
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}
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computeBranchTotals(property) {
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const stats = this[property];
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const ret = { total: 0, covered: 0, skipped: 0 };
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Object.values(stats).forEach(branches => {
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ret.covered += branches.filter(hits => hits > 0).length;
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ret.total += branches.length;
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});
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ret.pct = percent(ret.covered, ret.total);
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return ret;
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}
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/**
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* resets hit counts for all statements, functions and branches
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* in this coverage object resulting in zero coverage.
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*/
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resetHits() {
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const statements = this.s;
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const functions = this.f;
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const branches = this.b;
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const branchesTrue = this.bT;
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Object.keys(statements).forEach(s => {
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statements[s] = 0;
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});
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Object.keys(functions).forEach(f => {
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functions[f] = 0;
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});
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Object.keys(branches).forEach(b => {
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branches[b].fill(0);
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});
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// Tracking additional information about branch truthiness
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// can be optionally enabled:
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if (branchesTrue) {
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Object.keys(branchesTrue).forEach(bT => {
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branchesTrue[bT].fill(0);
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});
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}
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}
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/**
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* returns a CoverageSummary for this file coverage object
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* @returns {CoverageSummary}
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*/
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toSummary() {
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const ret = {};
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ret.lines = this.computeSimpleTotals('getLineCoverage');
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ret.functions = this.computeSimpleTotals('f', 'fnMap');
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ret.statements = this.computeSimpleTotals('s', 'statementMap');
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ret.branches = this.computeBranchTotals('b');
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// Tracking additional information about branch truthiness
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// can be optionally enabled:
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if (this.bT) {
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ret.branchesTrue = this.computeBranchTotals('bT');
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}
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return new CoverageSummary(ret);
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}
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}
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// expose coverage data attributes
|
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dataProperties(FileCoverage, [
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'path',
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'statementMap',
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'fnMap',
|
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'branchMap',
|
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's',
|
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'f',
|
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'b',
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'bT',
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'all'
|
||||
]);
|
||||
|
||||
module.exports = {
|
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FileCoverage,
|
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// exported for testing
|
||||
findNearestContainer,
|
||||
addHits,
|
||||
addNearestContainerHits
|
||||
};
|
||||
Reference in New Issue
Block a user