wehub-resource-sync
34 lines
993 B
TypeScript
34 lines
993 B
TypeScript
export class LineTransformStream extends TransformStream<string, string[]> {
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private buffer = "";
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constructor() {
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super({
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transform: (chunk, controller) => {
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// Append the chunk to the buffer
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this.buffer += chunk;
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// Split on newlines
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const lines = this.buffer.split("\n");
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// The last element might be incomplete, hold it back in buffer
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this.buffer = lines.pop() || "";
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// Filter out empty or whitespace-only lines
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const fullLines = lines.filter((line) => line.trim().length > 0);
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// If we got any complete lines, emit them as an array
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if (fullLines.length > 0) {
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controller.enqueue(fullLines);
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}
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},
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flush: (controller) => {
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// On stream end, if there's leftover text, emit it as a single-element array
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const trimmed = this.buffer.trim();
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if (trimmed.length > 0) {
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controller.enqueue([trimmed]);
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}
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},
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});
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}
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}
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