Fix eslint errors in api.mjs and api_services.mjs

[lydiagarms]

The eslint testing found some errors in both files api.mjs and api_services.mjs, which don't seem to cause any problems in practise. The details are below. We can ignore prettier errors and warnings, but should fix everything else.

For api.mjs

9:3 warning Unexpected console statement no-console
10:3 error 'listener' is not defined no-undef
11:5 warning Unexpected console statement no-console
12:5 error 'process' is not defined no-undef
16:1 error 'process' is not defined no-undef
17:1 error 'process' is not defined no-undef
30:31 error 'process' is not defined no-undef
31:5 warning Unexpected console statement no-console

For api_services.mjs

1:1 error Definition for rule 'prettier/prettier' was not found prettier/prettier
2:8 warning 'config' is defined but never used @typescript-eslint/no-unused-vars
3:8 warning 'assert' is defined but never used @typescript-eslint/no-unused-vars
9:28 warning 'getSiblingPath' is defined but never used @typescript-eslint/no-unused-vars
10:8 warning 'fs' is defined but never used @typescript-eslint/no-unused-vars
12:10 warning 'decrypt' is defined but never used @typescript-eslint/no-unused-vars
20:2 warning 'addConstructorNullifiers' is defined but never used @typescript-eslint/no-unused-vars
24:8 warning 'web3' is defined but never used @typescript-eslint/no-unused-vars
31:5 warning 'leafIndex' is assigned a value but never used @typescript-eslint/no-unused-vars
52:31 warning 'next' is defined but never used @typescript-eslint/no-unused-vars
64:4 warning Unexpected console statement no-console
70:5 warning Unexpected console statement no-console
71:5 warning Unexpected console statement no-console
76:5 warning Unexpected console statement no-console
77:5 warning Unexpected console statement no-console
87:31 warning 'next' is defined but never used @typescript-eslint/no-unused-vars
97:4 warning Unexpected console statement no-console
103:5 warning Unexpected console statement no-console
104:5 warning Unexpected console statement no-console
109:5 warning Unexpected console statement no-console
110:5 warning Unexpected console statement no-console
120:34 warning 'next' is defined but never used @typescript-eslint/no-unused-vars
134:4 warning Unexpected console statement no-console
140:5 warning Unexpected console statement no-console
141:5 warning Unexpected console statement no-console
146:5 warning Unexpected console statement no-console
147:5 warning Unexpected console statement no-console
157:34 warning 'next' is defined but never used @typescript-eslint/no-unused-vars
171:4 warning Unexpected console statement no-console
177:5 warning Unexpected console statement no-console
178:5 warning Unexpected console statement no-console
183:5 warning Unexpected console statement no-console
184:5 warning Unexpected console statement no-console
194:56 warning 'next' is defined but never used @typescript-eslint/no-unused-vars
204:52 warning 'next' is defined but never used @typescript-eslint/no-unused-vars
209:3 warning Unexpected console statement no-console
210:33 error 'err' is not defined no-undef
214:59 warning 'next' is defined but never used @typescript-eslint/no-unused-vars
220:3 warning Unexpected console statement no-console
221:33 error 'err' is not defined no-undef
225:63 warning 'next' is defined but never used @typescript-eslint/no-unused-vars
237:61 warning 'next' is defined but never used @typescript-eslint/no-unused-vars
248:52 warning 'next' is defined but never used @typescript-eslint/no-unused-vars
258:56 warning 'next' is defined but never used @typescript-eslint/no-unused-vars
269:55 warning 'next' is defined but never used @typescript-eslint/no-unused-vars