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function sortStarts(a, b) {
return (a.range ? a.range[0] : a.start) - (b.range ? b.range[0] : b.start);
}
/**
* Returns the string value of a template literal object.
* Tries to build it as best as it can based on the passed
* prop. For instance `This is a ${prop}` will return 'This is a {prop}'.
*
* If the template literal builds to undefined (`${undefined}`), then
* this should return "undefined".
*/
export default function extractValueFromTemplateLiteral(value) {
const {
quasis,
expressions,
} = value;
const partitions = quasis.concat(expressions);
return partitions.sort(sortStarts).reduce((raw, part) => {
const {
type,
} = part;
if (type === 'TemplateElement') {
return raw + part.value.raw;
}
if (type === 'Identifier') {
return part.name === 'undefined' ? `${raw}${part.name}` : `${raw}{${part.name}}`;
}
if (type.indexOf('Expression') > -1) {
return `${raw}{${type}}`;
}
return raw;
}, '');
}