66 lines
1.9 KiB
JavaScript
66 lines
1.9 KiB
JavaScript
export const isFunction = val => typeof val === 'function';
|
|
|
|
export const isArray = Array.isArray;
|
|
export const isString = val => typeof val === 'string';
|
|
export const isSymbol = val => typeof val === 'symbol';
|
|
export const isObject = val => val !== null && typeof val === 'object';
|
|
const onRE = /^on[^a-z]/;
|
|
const isOn = key => onRE.test(key);
|
|
|
|
const cacheStringFunction = fn => {
|
|
const cache = Object.create(null);
|
|
return str => {
|
|
const hit = cache[str];
|
|
return hit || (cache[str] = fn(str));
|
|
};
|
|
};
|
|
const camelizeRE = /-(\w)/g;
|
|
const camelize = cacheStringFunction(str => {
|
|
return str.replace(camelizeRE, (_, c) => (c ? c.toUpperCase() : ''));
|
|
});
|
|
|
|
const hyphenateRE = /\B([A-Z])/g;
|
|
const hyphenate = cacheStringFunction(str => {
|
|
return str.replace(hyphenateRE, '-$1').toLowerCase();
|
|
});
|
|
|
|
const capitalize = cacheStringFunction(str => {
|
|
return str.charAt(0).toUpperCase() + str.slice(1);
|
|
});
|
|
|
|
const hasOwnProperty = Object.prototype.hasOwnProperty;
|
|
const hasOwn = (val, key) => hasOwnProperty.call(val, key);
|
|
|
|
// change from vue sourcecode
|
|
function resolvePropValue(options, props, key, value) {
|
|
const opt = options[key];
|
|
if (opt != null) {
|
|
const hasDefault = hasOwn(opt, 'default');
|
|
// default values
|
|
if (hasDefault && value === undefined) {
|
|
const defaultValue = opt.default;
|
|
value = opt.type !== Function && isFunction(defaultValue) ? defaultValue() : defaultValue;
|
|
}
|
|
// boolean casting
|
|
if (opt.type === Boolean) {
|
|
if (!hasOwn(props, key) && !hasDefault) {
|
|
value = false;
|
|
} else if (value === '') {
|
|
value = true;
|
|
}
|
|
}
|
|
}
|
|
return value;
|
|
}
|
|
|
|
export function getDataAndAriaProps(props) {
|
|
return Object.keys(props).reduce((memo, key) => {
|
|
if (key.substr(0, 5) === 'data-' || key.substr(0, 5) === 'aria-') {
|
|
memo[key] = props[key];
|
|
}
|
|
return memo;
|
|
}, {});
|
|
}
|
|
|
|
export { isOn, cacheStringFunction, camelize, hyphenate, capitalize, resolvePropValue };
|