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value : new Value([value ? new Anonymous(value) : null]);\n    this.important = important ? ` ${important.trim()}` : '';\n    this.merge = merge;\n    this._index = index;\n    this._fileInfo = currentFileInfo;\n    this.inline = inline || false;\n    this.variable = (variable !== undefined) ? variable\n        : (name.charAt && (name.charAt(0) === '@'));\n    this.allowRoot = true;\n    this.setParent(this.value, this);\n};\n\nDeclaration.prototype = Object.assign(new Node(), {\n    type: 'Declaration',\n\n    genCSS(context, output) {\n        output.add(this.name + (context.compress ? ':' : ': '), this.fileInfo(), this.getIndex());\n        try {\n            this.value.genCSS(context, output);\n        }\n        catch (e) {\n            e.index = this._index;\n            e.filename = this._fileInfo.filename;\n            throw e;\n        }\n        output.add(this.important + ((this.inline || (context.lastRule && context.compress)) ? '' : ';'), this._fileInfo, this._index);\n    },\n\n    eval(context) {\n        let mathBypass = false, prevMath, name = this.name, evaldValue, variable = this.variable;\n        if (typeof name !== 'string') {\n            // expand 'primitive' name directly to get\n            // things faster (~10% for benchmark.less):\n            name = (name.length === 1) && (name[0] instanceof Keyword) ?\n                name[0].value : evalName(context, name);\n            variable = false; // never treat expanded interpolation as new variable name\n        }\n\n        // @todo remove when parens-division is default\n        if (name === 'font' && context.math === MATH.ALWAYS) {\n            mathBypass = true;\n            prevMath = context.math;\n            context.math = MATH.PARENS_DIVISION;\n        }\n        try {\n            context.importantScope.push({});\n            evaldValue = this.value.eval(context);\n\n            if (!this.variable && evaldValue.type === 'DetachedRuleset') {\n                throw { message: 'Rulesets cannot be evaluated on a property.',\n                    index: this.getIndex(), filename: this.fileInfo().filename };\n            }\n            let important = this.important;\n            const importantResult = context.importantScope.pop();\n            if (!important && importantResult.important) {\n                important = importantResult.important;\n            }\n\n            return new Declaration(name,\n                evaldValue,\n                important,\n                this.merge,\n                this.getIndex(), this.fileInfo(), this.inline,\n                variable);\n        }\n        catch (e) {\n            if (typeof e.index !== 'number') {\n                e.index = this.getIndex();\n                e.filename = this.fileInfo().filename;\n            }\n            throw e;\n        }\n        finally {\n            if (mathBypass) {\n                context.math = prevMath;\n            }\n        }\n    },\n\n    makeImportant() {\n        return new Declaration(this.name,\n            this.value,\n            '!important',\n            this.merge,\n            this.getIndex(), this.fileInfo(), this.inline);\n    }\n});\n\nexport default Declaration;"]}