{"version":3,"file":"jss-plugin-rule-value-function.js","sources":["../../../node_modules/tiny-warning/dist/tiny-warning.esm.js","../src/index.js"],"sourcesContent":["var isProduction = process.env.NODE_ENV === 'production';\nfunction warning(condition, message) {\n  if (!isProduction) {\n    if (condition) {\n      return;\n    }\n\n    var text = \"Warning: \" + message;\n\n    if (typeof console !== 'undefined') {\n      console.warn(text);\n    }\n\n    try {\n      throw Error(text);\n    } catch (x) {}\n  }\n}\n\nexport default warning;\n","// @flow\nimport warning from 'tiny-warning'\nimport {\n  createRule,\n  type Rule,\n  type JssStyle,\n  type RuleOptions,\n  type UpdateOptions,\n  type StyleRule,\n  type StyleSheet,\n  type Plugin\n} from 'jss'\n\n// A symbol replacement.\nlet now = Date.now()\nconst fnValuesNs = `fnValues${now}`\nconst fnRuleNs = `fnStyle${++now}`\n\ntype StyleRuleWithRuleFunction = StyleRule & {[key: string]: Function}\n\ntype FunctionPlugin = () => Plugin\n\nconst functionPlugin: FunctionPlugin = () => ({\n  onCreateRule(name?: string, decl: JssStyle, options: RuleOptions): Rule | null {\n    if (typeof decl !== 'function') return null\n    const rule: StyleRuleWithRuleFunction = (createRule(name, {}, options): any)\n    rule[fnRuleNs] = decl\n    return rule\n  },\n\n  onProcessStyle(style: JssStyle, rule: Rule): JssStyle {\n    // We need to extract function values from the declaration, so that we can keep core unaware of them.\n    // We need to do that only once.\n    // We don't need to extract functions on each style update, since this can happen only once.\n    // We don't support function values inside of function rules.\n    if (fnValuesNs in rule || fnRuleNs in rule) return style\n\n    const fnValues = {}\n    for (const prop in style) {\n      const value = style[prop]\n      if (typeof value !== 'function') continue\n      delete style[prop]\n      fnValues[prop] = value\n    }\n    // $FlowFixMe[prop-missing]\n    rule[fnValuesNs] = fnValues\n    return style\n  },\n\n  onUpdate(data: Object, rule: Rule, sheet?: StyleSheet, options: UpdateOptions) {\n    const styleRule: StyleRule = (rule: any)\n\n    // $FlowFixMe[prop-missing]\n    const fnRule = styleRule[fnRuleNs]\n\n    // If we have a style function, the entire rule is dynamic and style object\n    // will be returned from that function.\n    if (fnRule) {\n      // Empty object will remove all currently defined props\n      // in case function rule returns a falsy value.\n      styleRule.style = fnRule(data) || {}\n\n      if (process.env.NODE_ENV === 'development') {\n        for (const prop in styleRule.style) {\n          if (typeof styleRule.style[prop] === 'function') {\n            warning(false, '[JSS] Function values inside function rules are not supported.')\n            break\n          }\n        }\n      }\n    }\n\n    // $FlowFixMe[prop-missing]\n    const fnValues = styleRule[fnValuesNs]\n\n    // If we have a fn values map, it is a rule with function values.\n    if (fnValues) {\n      for (const prop in fnValues) {\n        styleRule.prop(prop, fnValues[prop](data), options)\n      }\n    }\n  }\n})\n\nexport default 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