40 lines
1.4 KiB
JavaScript
40 lines
1.4 KiB
JavaScript
// workaround for a gm bug where it doesn't output buffers properly
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// https://github.com/aheckmann/gm/issues/572#issuecomment-293768810
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module.exports = (data, format, type) => {
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return new Promise((resolve, reject) => {
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if (format) {
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data.out(type !== "sonic" ? "-layers" : "", type !=="sonic" ? "optimize" : "").stream(format, (err, stdout, stderr) => {
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if (err) return reject(err);
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const chunks = [];
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stdout.on("data", (chunk) => {
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chunks.push(chunk);
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});
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// these are 'once' because they can and do fire multiple times for multiple errors,
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// but this is a promise so you'll have to deal with them one at a time
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stdout.once("end", () => {
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resolve(Buffer.concat(chunks));
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});
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stderr.once("data", (data) => {
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reject(data.toString());
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});
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});
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} else {
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data.out("-layers", "optimize").stream((err, stdout, stderr) => {
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if (err) return reject(err);
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const chunks = [];
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stdout.on("data", (chunk) => {
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chunks.push(chunk);
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});
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// these are 'once' because they can and do fire multiple times for multiple errors,
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// but this is a promise so you'll have to deal with them one at a time
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stdout.once("end", () => {
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resolve(Buffer.concat(chunks));
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});
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stderr.once("data", (data) => {
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reject(data.toString());
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});
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});
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}
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});
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};
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