name : validateFormalSyntax.js "use strict"; Object.defineProperty(exports, "__esModule", { value: true }); Object.defineProperty(exports, "backgroundSize", { enumerable: true, get: function() { return backgroundSize; } }); const _dataTypes = require("./dataTypes"); const _splitAtTopLevelOnly = require("./splitAtTopLevelOnly"); function backgroundSize(value) { let keywordValues = [ "cover", "contain" ]; // the <length-percentage> type will probably be a css function // so we have to use `splitAtTopLevelOnly` return (0, _splitAtTopLevelOnly.splitAtTopLevelOnly)(value, ",").every((part)=>{ let sizes = (0, _splitAtTopLevelOnly.splitAtTopLevelOnly)(part, "_").filter(Boolean); if (sizes.length === 1 && keywordValues.includes(sizes[0])) return true; if (sizes.length !== 1 && sizes.length !== 2) return false; return sizes.every((size)=>(0, _dataTypes.length)(size) || (0, _dataTypes.percentage)(size) || size === "auto"); }); }