| 123456789101112131415161718192021222324252627282930313233 | let Declaration = require('../declaration')class OverscrollBehavior extends Declaration {  /**   * Change property name for IE   */  prefixed(prop, prefix) {    return prefix + 'scroll-chaining'  }  /**   * Return property name by spec   */  normalize() {    return 'overscroll-behavior'  }  /**   * Change value for IE   */  set(decl, prefix) {    if (decl.value === 'auto') {      decl.value = 'chained'    } else if (decl.value === 'none' || decl.value === 'contain') {      decl.value = 'none'    }    return super.set(decl, prefix)  }}OverscrollBehavior.names = ['overscroll-behavior', 'scroll-chaining']module.exports = OverscrollBehavior
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