Crawlers to produce Chromium versions mapping to chromium_base_position.

Result JSON data: https://github.com/vikyd/chromium-history-version-position

View page: https://vikyd.github.io/download-chromium-history-version/

[TOC]

All output json files locate in json folder.

Find all available Chromiunm versions, then find the chromium_base_position of each version. And genrate: all-version.json, version-position.json .

# doc: `node version-position-crawler.js -h`
# `all mode` or `incremental mode`
node version-position-crawler.js

all-version.json:

[
  "90.0.4399.1",
  "90.0.4399.0",
  "90.0.4398.1",
  "90.0.4398.0"
  // ...
]

version-position.json:

{
  "90.0.4399.1": "846615",
  "90.0.4399.0": "846615",
  "90.0.4398.1": "846545",
  "90.0.4398.0": "846545"
  // ...
}

Find all available Chromiunm chromium_base_position of each OS. And generate: position/position-Mac.json etc.

node position-crawler.js
# about 90 seconds

position-Mac.json:

[
  "15734",
  "15749",
  "15839",
  "15942"
  // ...
]

Compare version-position.json and each position/position-os.json, extract the intersection of the chromium_base_position, generate the final json files: version-position-Mac.json etc.

node ver-pos-os-generator.js

Mac-ver-pos.json:

{
  "90.0.4398.1": "846545",
  "90.0.4398.0": "846545",
  "90.0.4396.2": "845872",
  "90.0.4396.1": "845872"
  // ...
}

all-version.json -> version-position.json ->
                                              -> ver-pos-[os].json
                       position-[os].json ->

It is hard to fetch all position successfully at one loop.

If you really want a full fetch, you may need to modify parameters in the js file.

Because of some problems of the position api:

• data OK: https://omahaproxy.appspot.com/deps.json?version=87.0.4253.0
• no data: https://omahaproxy.appspot.com/deps.json?version=33.0.1733.0

Most version before v38.0.0.0 is missing.