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enhance Return a buffer when producing PDF output via stdout #47

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enhance Return a buffer when producing PDF output via stdout #47

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3813bd2
enhance When supplying preset "pdf", return a Buffer unless tessdata-…
isdampe May 29, 2025
35de629
update: default maxBuffer size
isdampe Jul 14, 2025
f6816b8
version: bump
isdampe Jul 14, 2025
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2 changes: 1 addition & 1 deletion package.json
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
{
"name": "node-tesseract-ocr",
"version": "2.2.1",
"version": "2.2.2",
"description": "A Node.js wrapper for the Tesseract OCR API",
"keywords": [
"ocr",
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3 changes: 2 additions & 1 deletion src/index.d.ts
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Expand Up @@ -192,4 +192,5 @@ export type Config = Partial<{
* @param config - any OCR options and control parameters
* @returns default output format is text
*/
export function recognize(input: Input, config?: Config): Promise<string>
export function recognize(input: Input, config: Config & { presets: (string | Preset)[] & ["pdf"] }): Promise<Buffer>
export function recognize(input: Input, config?: Config): Promise<string>
9 changes: 8 additions & 1 deletion src/index.js
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Expand Up @@ -16,7 +16,14 @@ function recognize(input, config = {}) {
if (config.debug) log("command", command)

return new Promise((resolve, reject) => {
const child = exec(command, (error, stdout, stderr) => {
const opts = {}
if (!config["tessdata-dir"] && config.presets && Array.isArray(config.presets) && config.presets.includes("pdf"))
opts.encoding = "buffer"

const child = exec(command, {
...opts,
maxBuffer: 1024 * 1024 * 32
}, (error, stdout, stderr) => {
if (config.debug) log(stderr)
if (error) reject(error)
resolve(stdout)
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