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Original file line number Diff line number Diff line change
Expand Up @@ -10,8 +10,16 @@
* governing permissions and limitations under the License.
*/

interface Options {
/**
* Output module format.
* @default 'cjs'
*/
format?: 'cjs' | 'esm'
}

/** Compiles an object containing ICU message strings to a JavaScript module. */
export function compileStrings(messages: Record<string, string>): string;
export function compileStrings(messages: Record<string, string>, options?: Options): string;

/** Compiles a single ICU message string to JavaScript source code. */
export function compileString(message: string): string;
Original file line number Diff line number Diff line change
Expand Up @@ -12,8 +12,8 @@

const {parse, TYPE} = require('@formatjs/icu-messageformat-parser');

function compileStrings(messages) {
let res = 'module.exports = {';
function compileStrings(messages, options) {
let res = options?.format === 'esm' ? 'export default {' : 'module.exports = {';
for (let key in messages) {
res += ' ' + JSON.stringify(key) + ': ' + compileString(messages[key]) + ',\n';
}
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