in tools/lighthouse-audit.js [198:216]
function parseMinScores(raw) {
const minScores = {};
if (/^\d+$/.test(raw)) {
raw = `all:${raw}`;
}
raw.split(',')
.map(x => x.split(':'))
.forEach(([ key, val ]) => minScores[key] = Number(val) / 100);
if (minScores.hasOwnProperty('all')) {
AUDIT_CATEGORIES.forEach(cat => minScores.hasOwnProperty(cat) ||
(minScores[cat] = minScores.all));
delete minScores.all;
}
return minScores;
}